Home / 20,499.55-28,289.55-11,545.30

Finding the Fourth Proportional to 20,499.55, 28,289.55 and 11,545.30

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Solution

The fourth proportional to 20,499.55, 28,289.55 and 11,545.30 is: 15,932.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.55 : 28,289.55 = 11,545.30 : x
  2. Step 2: Convert to fraction form
    20,499.55/28,289.55 = 11,545.30/x
  3. Step 3: Cross multiply
    20,499.55x = 28,289.55 × 11,545.30
  4. Step 4: Simplify right side
    20,499.55x = 326,611,420.27
  5. Step 5: Solve for x
    x = 326,611,420.27/20,499.55
  6. Step 6: Final answer
    x = 15,932.62

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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.