Home / 28,354.69-39,127.18-16,418.79

Finding the Fourth Proportional to 28,354.69, 39,127.18 and 16,418.79

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Solution

The fourth proportional to 28,354.69, 39,127.18 and 16,418.79 is: 22,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354.69 : 39,127.18 = 16,418.79 : x
  2. Step 2: Convert to fraction form
    28,354.69/39,127.18 = 16,418.79/x
  3. Step 3: Cross multiply
    28,354.69x = 39,127.18 × 16,418.79
  4. Step 4: Simplify right side
    28,354.69x = 642,420,951.71
  5. Step 5: Solve for x
    x = 642,420,951.71/28,354.69
  6. Step 6: Final answer
    x = 22,656.60

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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.