Home / 10,125.70-15,190.92-5,115.58

Finding the Fourth Proportional to 10,125.70, 15,190.92 and 5,115.58

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Solution

The fourth proportional to 10,125.70, 15,190.92 and 5,115.58 is: 7,674.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,125.70 : 15,190.92 = 5,115.58 : x
  2. Step 2: Convert to fraction form
    10,125.70/15,190.92 = 5,115.58/x
  3. Step 3: Cross multiply
    10,125.70x = 15,190.92 × 5,115.58
  4. Step 4: Simplify right side
    10,125.70x = 77,710,366.53
  5. Step 5: Solve for x
    x = 77,710,366.53/10,125.70
  6. Step 6: Final answer
    x = 7,674.57

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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.