Home / 20,483.66-28,270.13-11,532.90

Finding the Fourth Proportional to 20,483.66, 28,270.13 and 11,532.90

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Solution

The fourth proportional to 20,483.66, 28,270.13 and 11,532.90 is: 15,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.66 : 28,270.13 = 11,532.90 : x
  2. Step 2: Convert to fraction form
    20,483.66/28,270.13 = 11,532.90/x
  3. Step 3: Cross multiply
    20,483.66x = 28,270.13 × 11,532.90
  4. Step 4: Simplify right side
    20,483.66x = 326,036,524.61
  5. Step 5: Solve for x
    x = 326,036,524.61/20,483.66
  6. Step 6: Final answer
    x = 15,916.91

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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.