Home / 10,331.46-15,502.41-4,778.55

Finding the Fourth Proportional to 10,331.46, 15,502.41 and 4,778.55

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Solution

The fourth proportional to 10,331.46, 15,502.41 and 4,778.55 is: 7,170.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,331.46 : 15,502.41 = 4,778.55 : x
  2. Step 2: Convert to fraction form
    10,331.46/15,502.41 = 4,778.55/x
  3. Step 3: Cross multiply
    10,331.46x = 15,502.41 × 4,778.55
  4. Step 4: Simplify right side
    10,331.46x = 74,079,041.31
  5. Step 5: Solve for x
    x = 74,079,041.31/10,331.46
  6. Step 6: Final answer
    x = 7,170.24

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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.