Home / 28,387.12-39,171.24-16,454.20

Finding the Fourth Proportional to 28,387.12, 39,171.24 and 16,454.20

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Solution

The fourth proportional to 28,387.12, 39,171.24 and 16,454.20 is: 22,705.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,387.12 : 39,171.24 = 16,454.20 : x
  2. Step 2: Convert to fraction form
    28,387.12/39,171.24 = 16,454.20/x
  3. Step 3: Cross multiply
    28,387.12x = 39,171.24 × 16,454.20
  4. Step 4: Simplify right side
    28,387.12x = 644,531,417.21
  5. Step 5: Solve for x
    x = 644,531,417.21/28,387.12
  6. Step 6: Final answer
    x = 22,705.07

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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.