Home / 10,103.80-15,158.40-9,015.70

Finding the Fourth Proportional to 10,103.80, 15,158.40 and 9,015.70

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Solution

The fourth proportional to 10,103.80, 15,158.40 and 9,015.70 is: 13,525.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.80 : 15,158.40 = 9,015.70 : x
  2. Step 2: Convert to fraction form
    10,103.80/15,158.40 = 9,015.70/x
  3. Step 3: Cross multiply
    10,103.80x = 15,158.40 × 9,015.70
  4. Step 4: Simplify right side
    10,103.80x = 136,663,586.88
  5. Step 5: Solve for x
    x = 136,663,586.88/10,103.80
  6. Step 6: Final answer
    x = 13,525.96

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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.