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Finding the Fourth Proportional to 18,395.60, 27,440.67 and 17,780.60

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Solution

The fourth proportional to 18,395.60, 27,440.67 and 17,780.60 is: 26,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,395.60 : 27,440.67 = 17,780.60 : x
  2. Step 2: Convert to fraction form
    18,395.60/27,440.67 = 17,780.60/x
  3. Step 3: Cross multiply
    18,395.60x = 27,440.67 × 17,780.60
  4. Step 4: Simplify right side
    18,395.60x = 487,911,488.10
  5. Step 5: Solve for x
    x = 487,911,488.10/18,395.60
  6. Step 6: Final answer
    x = 26,523.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.