Home / 21,423.47-29,565.24-11,992.01

Finding the Fourth Proportional to 21,423.47, 29,565.24 and 11,992.01

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Solution

The fourth proportional to 21,423.47, 29,565.24 and 11,992.01 is: 16,549.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.47 : 29,565.24 = 11,992.01 : x
  2. Step 2: Convert to fraction form
    21,423.47/29,565.24 = 11,992.01/x
  3. Step 3: Cross multiply
    21,423.47x = 29,565.24 × 11,992.01
  4. Step 4: Simplify right side
    21,423.47x = 354,546,653.73
  5. Step 5: Solve for x
    x = 354,546,653.73/21,423.47
  6. Step 6: Final answer
    x = 16,549.45

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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.