Home / 21,294.64-31,941.85-11,934.69

Finding the Fourth Proportional to 21,294.64, 31,941.85 and 11,934.69

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Solution

The fourth proportional to 21,294.64, 31,941.85 and 11,934.69 is: 17,901.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.64 : 31,941.85 = 11,934.69 : x
  2. Step 2: Convert to fraction form
    21,294.64/31,941.85 = 11,934.69/x
  3. Step 3: Cross multiply
    21,294.64x = 31,941.85 × 11,934.69
  4. Step 4: Simplify right side
    21,294.64x = 381,216,077.78
  5. Step 5: Solve for x
    x = 381,216,077.78/21,294.64
  6. Step 6: Final answer
    x = 17,901.97

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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.