Home / 13,428.56-18,531.42-7,460

Finding the Fourth Proportional to 13,428.56, 18,531.42 and 7,460

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Solution

The fourth proportional to 13,428.56, 18,531.42 and 7,460 is: 10,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.56 : 18,531.42 = 7,460 : x
  2. Step 2: Convert to fraction form
    13,428.56/18,531.42 = 7,460/x
  3. Step 3: Cross multiply
    13,428.56x = 18,531.42 × 7,460
  4. Step 4: Simplify right side
    13,428.56x = 138,244,393.20
  5. Step 5: Solve for x
    x = 138,244,393.20/13,428.56
  6. Step 6: Final answer
    x = 10,294.80

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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.