Home / 28,209.66-38,937.90-16,280.79

Finding the Fourth Proportional to 28,209.66, 38,937.90 and 16,280.79

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Solution

The fourth proportional to 28,209.66, 38,937.90 and 16,280.79 is: 22,472.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.66 : 38,937.90 = 16,280.79 : x
  2. Step 2: Convert to fraction form
    28,209.66/38,937.90 = 16,280.79/x
  3. Step 3: Cross multiply
    28,209.66x = 38,937.90 × 16,280.79
  4. Step 4: Simplify right side
    28,209.66x = 633,939,772.94
  5. Step 5: Solve for x
    x = 633,939,772.94/28,209.66
  6. Step 6: Final answer
    x = 22,472.44

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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.