Home / 10,120.48-15,235.36-9,103.28

Finding the Fourth Proportional to 10,120.48, 15,235.36 and 9,103.28

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Solution

The fourth proportional to 10,120.48, 15,235.36 and 9,103.28 is: 13,704.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.48 : 15,235.36 = 9,103.28 : x
  2. Step 2: Convert to fraction form
    10,120.48/15,235.36 = 9,103.28/x
  3. Step 3: Cross multiply
    10,120.48x = 15,235.36 × 9,103.28
  4. Step 4: Simplify right side
    10,120.48x = 138,691,747.98
  5. Step 5: Solve for x
    x = 138,691,747.98/10,120.48
  6. Step 6: Final answer
    x = 13,704.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.