Home / 20,499.48-28,285.53-11,545.07

Finding the Fourth Proportional to 20,499.48, 28,285.53 and 11,545.07

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Solution

The fourth proportional to 20,499.48, 28,285.53 and 11,545.07 is: 15,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.48 : 28,285.53 = 11,545.07 : x
  2. Step 2: Convert to fraction form
    20,499.48/28,285.53 = 11,545.07/x
  3. Step 3: Cross multiply
    20,499.48x = 28,285.53 × 11,545.07
  4. Step 4: Simplify right side
    20,499.48x = 326,558,388.48
  5. Step 5: Solve for x
    x = 326,558,388.48/20,499.48
  6. Step 6: Final answer
    x = 15,930.08

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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.