Home / 10,112.88-15,147.72-9,429.36

Finding the Fourth Proportional to 10,112.88, 15,147.72 and 9,429.36

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Solution

The fourth proportional to 10,112.88, 15,147.72 and 9,429.36 is: 14,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.88 : 15,147.72 = 9,429.36 : x
  2. Step 2: Convert to fraction form
    10,112.88/15,147.72 = 9,429.36/x
  3. Step 3: Cross multiply
    10,112.88x = 15,147.72 × 9,429.36
  4. Step 4: Simplify right side
    10,112.88x = 142,833,305.06
  5. Step 5: Solve for x
    x = 142,833,305.06/10,112.88
  6. Step 6: Final answer
    x = 14,123.90

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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.