Home / 13,129.40-19,702.32-5,338.28

Finding the Fourth Proportional to 13,129.40, 19,702.32 and 5,338.28

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Solution

The fourth proportional to 13,129.40, 19,702.32 and 5,338.28 is: 8,010.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.40 : 19,702.32 = 5,338.28 : x
  2. Step 2: Convert to fraction form
    13,129.40/19,702.32 = 5,338.28/x
  3. Step 3: Cross multiply
    13,129.40x = 19,702.32 × 5,338.28
  4. Step 4: Simplify right side
    13,129.40x = 105,176,500.81
  5. Step 5: Solve for x
    x = 105,176,500.81/13,129.40
  6. Step 6: Final answer
    x = 8,010.76

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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.