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Finding the Fourth Proportional to 17,778,843.60, 26,668,265.40 and 13,299,867.60

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Solution

The fourth proportional to 17,778,843.60, 26,668,265.40 and 13,299,867.60 is: 19,949,801.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778,843.60 : 26,668,265.40 = 13,299,867.60 : x
  2. Step 2: Convert to fraction form
    17,778,843.60/26,668,265.40 = 13,299,867.60/x
  3. Step 3: Cross multiply
    17,778,843.60x = 26,668,265.40 × 13,299,867.60
  4. Step 4: Simplify right side
    17,778,843.60x = 354,684,398,941,661
  5. Step 5: Solve for x
    x = 354,684,398,941,661/17,778,843.60
  6. Step 6: Final answer
    x = 19,949,801.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.