Home / 20,136.95-30,207.24-8,287.97

Finding the Fourth Proportional to 20,136.95, 30,207.24 and 8,287.97

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Solution

The fourth proportional to 20,136.95, 30,207.24 and 8,287.97 is: 12,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.95 : 30,207.24 = 8,287.97 : x
  2. Step 2: Convert to fraction form
    20,136.95/30,207.24 = 8,287.97/x
  3. Step 3: Cross multiply
    20,136.95x = 30,207.24 × 8,287.97
  4. Step 4: Simplify right side
    20,136.95x = 250,356,547.87
  5. Step 5: Solve for x
    x = 250,356,547.87/20,136.95
  6. Step 6: Final answer
    x = 12,432.70

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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.