Home / 10,520.41-15,777.88-3,123.13

Finding the Fourth Proportional to 10,520.41, 15,777.88 and 3,123.13

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Solution

The fourth proportional to 10,520.41, 15,777.88 and 3,123.13 is: 4,683.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.41 : 15,777.88 = 3,123.13 : x
  2. Step 2: Convert to fraction form
    10,520.41/15,777.88 = 3,123.13/x
  3. Step 3: Cross multiply
    10,520.41x = 15,777.88 × 3,123.13
  4. Step 4: Simplify right side
    10,520.41x = 49,276,370.36
  5. Step 5: Solve for x
    x = 49,276,370.36/10,520.41
  6. Step 6: Final answer
    x = 4,683.88

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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.