Home / 21,307.28-32,007-18,026.96

Finding the Fourth Proportional to 21,307.28, 32,007 and 18,026.96

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Solution

The fourth proportional to 21,307.28, 32,007 and 18,026.96 is: 27,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.28 : 32,007 = 18,026.96 : x
  2. Step 2: Convert to fraction form
    21,307.28/32,007 = 18,026.96/x
  3. Step 3: Cross multiply
    21,307.28x = 32,007 × 18,026.96
  4. Step 4: Simplify right side
    21,307.28x = 576,988,908.72
  5. Step 5: Solve for x
    x = 576,988,908.72/21,307.28
  6. Step 6: Final answer
    x = 27,079.43

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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.