Home / 28,432.80-39,237.12-16,498.40

Finding the Fourth Proportional to 28,432.80, 39,237.12 and 16,498.40

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Solution

The fourth proportional to 28,432.80, 39,237.12 and 16,498.40 is: 22,767.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.80 : 39,237.12 = 16,498.40 : x
  2. Step 2: Convert to fraction form
    28,432.80/39,237.12 = 16,498.40/x
  3. Step 3: Cross multiply
    28,432.80x = 39,237.12 × 16,498.40
  4. Step 4: Simplify right side
    28,432.80x = 647,349,700.61
  5. Step 5: Solve for x
    x = 647,349,700.61/28,432.80
  6. Step 6: Final answer
    x = 22,767.71

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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.