Home / 21,376.08-29,498.33-11,815.40

Finding the Fourth Proportional to 21,376.08, 29,498.33 and 11,815.40

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Solution

The fourth proportional to 21,376.08, 29,498.33 and 11,815.40 is: 16,304.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.08 : 29,498.33 = 11,815.40 : x
  2. Step 2: Convert to fraction form
    21,376.08/29,498.33 = 11,815.40/x
  3. Step 3: Cross multiply
    21,376.08x = 29,498.33 × 11,815.40
  4. Step 4: Simplify right side
    21,376.08x = 348,534,361.71
  5. Step 5: Solve for x
    x = 348,534,361.71/21,376.08
  6. Step 6: Final answer
    x = 16,304.88

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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.