Home / 21,424.30-29,564.85-11,864.59

Finding the Fourth Proportional to 21,424.30, 29,564.85 and 11,864.59

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Solution

The fourth proportional to 21,424.30, 29,564.85 and 11,864.59 is: 16,372.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.30 : 29,564.85 = 11,864.59 : x
  2. Step 2: Convert to fraction form
    21,424.30/29,564.85 = 11,864.59/x
  3. Step 3: Cross multiply
    21,424.30x = 29,564.85 × 11,864.59
  4. Step 4: Simplify right side
    21,424.30x = 350,774,823.66
  5. Step 5: Solve for x
    x = 350,774,823.66/21,424.30
  6. Step 6: Final answer
    x = 16,372.76

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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.