Home / 10,143.30-15,190.10-8,377.50

Finding the Fourth Proportional to 10,143.30, 15,190.10 and 8,377.50

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Solution

The fourth proportional to 10,143.30, 15,190.10 and 8,377.50 is: 12,545.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.30 : 15,190.10 = 8,377.50 : x
  2. Step 2: Convert to fraction form
    10,143.30/15,190.10 = 8,377.50/x
  3. Step 3: Cross multiply
    10,143.30x = 15,190.10 × 8,377.50
  4. Step 4: Simplify right side
    10,143.30x = 127,254,944.91
  5. Step 5: Solve for x
    x = 127,254,944.91/10,143.30
  6. Step 6: Final answer
    x = 12,545.72

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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.