Home / 13,428.38-18,531.60-7,460.66

Finding the Fourth Proportional to 13,428.38, 18,531.60 and 7,460.66

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Solution

The fourth proportional to 13,428.38, 18,531.60 and 7,460.66 is: 10,295.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.38 : 18,531.60 = 7,460.66 : x
  2. Step 2: Convert to fraction form
    13,428.38/18,531.60 = 7,460.66/x
  3. Step 3: Cross multiply
    13,428.38x = 18,531.60 × 7,460.66
  4. Step 4: Simplify right side
    13,428.38x = 138,257,966.86
  5. Step 5: Solve for x
    x = 138,257,966.86/13,428.38
  6. Step 6: Final answer
    x = 10,295.95

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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.