Home / 10,378.66-15,561.68-4,139.62

Finding the Fourth Proportional to 10,378.66, 15,561.68 and 4,139.62

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Solution

The fourth proportional to 10,378.66, 15,561.68 and 4,139.62 is: 6,206.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,378.66 : 15,561.68 = 4,139.62 : x
  2. Step 2: Convert to fraction form
    10,378.66/15,561.68 = 4,139.62/x
  3. Step 3: Cross multiply
    10,378.66x = 15,561.68 × 4,139.62
  4. Step 4: Simplify right side
    10,378.66x = 64,419,441.76
  5. Step 5: Solve for x
    x = 64,419,441.76/10,378.66
  6. Step 6: Final answer
    x = 6,206.91

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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.