Home / 28,935.97-39,918.15-18,730.30

Finding the Fourth Proportional to 28,935.97, 39,918.15 and 18,730.30

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Solution

The fourth proportional to 28,935.97, 39,918.15 and 18,730.30 is: 25,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,935.97 : 39,918.15 = 18,730.30 : x
  2. Step 2: Convert to fraction form
    28,935.97/39,918.15 = 18,730.30/x
  3. Step 3: Cross multiply
    28,935.97x = 39,918.15 × 18,730.30
  4. Step 4: Simplify right side
    28,935.97x = 747,678,772.18
  5. Step 5: Solve for x
    x = 747,678,772.18/28,935.97
  6. Step 6: Final answer
    x = 25,839.08

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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.