Home / 12,972.90-17,899.35-7,306.50

Finding the Fourth Proportional to 12,972.90, 17,899.35 and 7,306.50

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Solution

The fourth proportional to 12,972.90, 17,899.35 and 7,306.50 is: 10,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.90 : 17,899.35 = 7,306.50 : x
  2. Step 2: Convert to fraction form
    12,972.90/17,899.35 = 7,306.50/x
  3. Step 3: Cross multiply
    12,972.90x = 17,899.35 × 7,306.50
  4. Step 4: Simplify right side
    12,972.90x = 130,781,600.78
  5. Step 5: Solve for x
    x = 130,781,600.78/12,972.90
  6. Step 6: Final answer
    x = 10,081.14

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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.