Home / 28,432.12-42,648.18-9,959.80

Finding the Fourth Proportional to 28,432.12, 42,648.18 and 9,959.80

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Solution

The fourth proportional to 28,432.12, 42,648.18 and 9,959.80 is: 14,939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.12 : 42,648.18 = 9,959.80 : x
  2. Step 2: Convert to fraction form
    28,432.12/42,648.18 = 9,959.80/x
  3. Step 3: Cross multiply
    28,432.12x = 42,648.18 × 9,959.80
  4. Step 4: Simplify right side
    28,432.12x = 424,767,343.16
  5. Step 5: Solve for x
    x = 424,767,343.16/28,432.12
  6. Step 6: Final answer
    x = 14,939.70

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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.