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Finding the Fourth Proportional to 19,080.76, 26,303.80 and 13,398.20

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Solution

The fourth proportional to 19,080.76, 26,303.80 and 13,398.20 is: 18,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,080.76 : 26,303.80 = 13,398.20 : x
  2. Step 2: Convert to fraction form
    19,080.76/26,303.80 = 13,398.20/x
  3. Step 3: Cross multiply
    19,080.76x = 26,303.80 × 13,398.20
  4. Step 4: Simplify right side
    19,080.76x = 352,423,573.16
  5. Step 5: Solve for x
    x = 352,423,573.16/19,080.76
  6. Step 6: Final answer
    x = 18,470.10

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.