Home / 20,497.86-28,287.53-11,545.23

Finding the Fourth Proportional to 20,497.86, 28,287.53 and 11,545.23

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Solution

The fourth proportional to 20,497.86, 28,287.53 and 11,545.23 is: 15,932.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497.86 : 28,287.53 = 11,545.23 : x
  2. Step 2: Convert to fraction form
    20,497.86/28,287.53 = 11,545.23/x
  3. Step 3: Cross multiply
    20,497.86x = 28,287.53 × 11,545.23
  4. Step 4: Simplify right side
    20,497.86x = 326,586,131.63
  5. Step 5: Solve for x
    x = 326,586,131.63/20,497.86
  6. Step 6: Final answer
    x = 15,932.69

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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.