Home / 20,729.71-28,578.01-17,530.15

Finding the Fourth Proportional to 20,729.71, 28,578.01 and 17,530.15

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Solution

The fourth proportional to 20,729.71, 28,578.01 and 17,530.15 is: 24,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.71 : 28,578.01 = 17,530.15 : x
  2. Step 2: Convert to fraction form
    20,729.71/28,578.01 = 17,530.15/x
  3. Step 3: Cross multiply
    20,729.71x = 28,578.01 × 17,530.15
  4. Step 4: Simplify right side
    20,729.71x = 500,976,802.00
  5. Step 5: Solve for x
    x = 500,976,802.00/20,729.71
  6. Step 6: Final answer
    x = 24,167.10

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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.