Home / 10,143.18-15,217.80-3,903.74

Finding the Fourth Proportional to 10,143.18, 15,217.80 and 3,903.74

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Solution

The fourth proportional to 10,143.18, 15,217.80 and 3,903.74 is: 5,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.18 : 15,217.80 = 3,903.74 : x
  2. Step 2: Convert to fraction form
    10,143.18/15,217.80 = 3,903.74/x
  3. Step 3: Cross multiply
    10,143.18x = 15,217.80 × 3,903.74
  4. Step 4: Simplify right side
    10,143.18x = 59,406,334.57
  5. Step 5: Solve for x
    x = 59,406,334.57/10,143.18
  6. Step 6: Final answer
    x = 5,856.78

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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.