Home / 21,240.69-31,864.87-8,753.77

Finding the Fourth Proportional to 21,240.69, 31,864.87 and 8,753.77

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Solution

The fourth proportional to 21,240.69, 31,864.87 and 8,753.77 is: 13,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240.69 : 31,864.87 = 8,753.77 : x
  2. Step 2: Convert to fraction form
    21,240.69/31,864.87 = 8,753.77/x
  3. Step 3: Cross multiply
    21,240.69x = 31,864.87 × 8,753.77
  4. Step 4: Simplify right side
    21,240.69x = 278,937,743.06
  5. Step 5: Solve for x
    x = 278,937,743.06/21,240.69
  6. Step 6: Final answer
    x = 13,132.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.