Home / 19,639.72-29,460.30-8,531.20

Finding the Fourth Proportional to 19,639.72, 29,460.30 and 8,531.20

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Solution

The fourth proportional to 19,639.72, 29,460.30 and 8,531.20 is: 12,797.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.72 : 29,460.30 = 8,531.20 : x
  2. Step 2: Convert to fraction form
    19,639.72/29,460.30 = 8,531.20/x
  3. Step 3: Cross multiply
    19,639.72x = 29,460.30 × 8,531.20
  4. Step 4: Simplify right side
    19,639.72x = 251,331,711.36
  5. Step 5: Solve for x
    x = 251,331,711.36/19,639.72
  6. Step 6: Final answer
    x = 12,797.11

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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.