Home / 21,624.64-32,338.12-15,721.36

Finding the Fourth Proportional to 21,624.64, 32,338.12 and 15,721.36

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Solution

The fourth proportional to 21,624.64, 32,338.12 and 15,721.36 is: 23,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.64 : 32,338.12 = 15,721.36 : x
  2. Step 2: Convert to fraction form
    21,624.64/32,338.12 = 15,721.36/x
  3. Step 3: Cross multiply
    21,624.64x = 32,338.12 × 15,721.36
  4. Step 4: Simplify right side
    21,624.64x = 508,399,226.24
  5. Step 5: Solve for x
    x = 508,399,226.24/21,624.64
  6. Step 6: Final answer
    x = 23,510.18

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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.