Home / 28,539.62-39,387.64-16,440.52

Finding the Fourth Proportional to 28,539.62, 39,387.64 and 16,440.52

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Solution

The fourth proportional to 28,539.62, 39,387.64 and 16,440.52 is: 22,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.62 : 39,387.64 = 16,440.52 : x
  2. Step 2: Convert to fraction form
    28,539.62/39,387.64 = 16,440.52/x
  3. Step 3: Cross multiply
    28,539.62x = 39,387.64 × 16,440.52
  4. Step 4: Simplify right side
    28,539.62x = 647,553,283.17
  5. Step 5: Solve for x
    x = 647,553,283.17/28,539.62
  6. Step 6: Final answer
    x = 22,689.63

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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.