Home / 28,445.04-42,629.76-15,115.20

Finding the Fourth Proportional to 28,445.04, 42,629.76 and 15,115.20

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Solution

The fourth proportional to 28,445.04, 42,629.76 and 15,115.20 is: 22,652.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.04 : 42,629.76 = 15,115.20 : x
  2. Step 2: Convert to fraction form
    28,445.04/42,629.76 = 15,115.20/x
  3. Step 3: Cross multiply
    28,445.04x = 42,629.76 × 15,115.20
  4. Step 4: Simplify right side
    28,445.04x = 644,357,348.35
  5. Step 5: Solve for x
    x = 644,357,348.35/28,445.04
  6. Step 6: Final answer
    x = 22,652.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.