Home / 22,710.24-31,313.32-15,543.61

Finding the Fourth Proportional to 22,710.24, 31,313.32 and 15,543.61

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Solution

The fourth proportional to 22,710.24, 31,313.32 and 15,543.61 is: 21,431.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,710.24 : 31,313.32 = 15,543.61 : x
  2. Step 2: Convert to fraction form
    22,710.24/31,313.32 = 15,543.61/x
  3. Step 3: Cross multiply
    22,710.24x = 31,313.32 × 15,543.61
  4. Step 4: Simplify right side
    22,710.24x = 486,721,916.74
  5. Step 5: Solve for x
    x = 486,721,916.74/22,710.24
  6. Step 6: Final answer
    x = 21,431.83

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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.