Home / 13,442.40-20,146.56-5,642.16

Finding the Fourth Proportional to 13,442.40, 20,146.56 and 5,642.16

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Solution

The fourth proportional to 13,442.40, 20,146.56 and 5,642.16 is: 8,456.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.40 : 20,146.56 = 5,642.16 : x
  2. Step 2: Convert to fraction form
    13,442.40/20,146.56 = 5,642.16/x
  3. Step 3: Cross multiply
    13,442.40x = 20,146.56 × 5,642.16
  4. Step 4: Simplify right side
    13,442.40x = 113,670,114.97
  5. Step 5: Solve for x
    x = 113,670,114.97/13,442.40
  6. Step 6: Final answer
    x = 8,456.09

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1.5x scale

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.