Home / 12,972.52-17,905.28-7,386.76

Finding the Fourth Proportional to 12,972.52, 17,905.28 and 7,386.76

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Solution

The fourth proportional to 12,972.52, 17,905.28 and 7,386.76 is: 10,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.52 : 17,905.28 = 7,386.76 : x
  2. Step 2: Convert to fraction form
    12,972.52/17,905.28 = 7,386.76/x
  3. Step 3: Cross multiply
    12,972.52x = 17,905.28 × 7,386.76
  4. Step 4: Simplify right side
    12,972.52x = 132,262,006.09
  5. Step 5: Solve for x
    x = 132,262,006.09/12,972.52
  6. Step 6: Final answer
    x = 10,195.55

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1.5x scale

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.