Home / 21,620.64-32,332.14-15,717.36

Finding the Fourth Proportional to 21,620.64, 32,332.14 and 15,717.36

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Solution

The fourth proportional to 21,620.64, 32,332.14 and 15,717.36 is: 23,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,620.64 : 32,332.14 = 15,717.36 : x
  2. Step 2: Convert to fraction form
    21,620.64/32,332.14 = 15,717.36/x
  3. Step 3: Cross multiply
    21,620.64x = 32,332.14 × 15,717.36
  4. Step 4: Simplify right side
    21,620.64x = 508,175,883.95
  5. Step 5: Solve for x
    x = 508,175,883.95/21,620.64
  6. Step 6: Final answer
    x = 23,504.20

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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.