Home / 21,332.39-31,984.87-8,861.01

Finding the Fourth Proportional to 21,332.39, 31,984.87 and 8,861.01

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Solution

The fourth proportional to 21,332.39, 31,984.87 and 8,861.01 is: 13,285.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.39 : 31,984.87 = 8,861.01 : x
  2. Step 2: Convert to fraction form
    21,332.39/31,984.87 = 8,861.01/x
  3. Step 3: Cross multiply
    21,332.39x = 31,984.87 × 8,861.01
  4. Step 4: Simplify right side
    21,332.39x = 283,418,252.92
  5. Step 5: Solve for x
    x = 283,418,252.92/21,332.39
  6. Step 6: Final answer
    x = 13,285.82

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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.