Home / 10,120.55-13,966.43-6,138.99

Finding the Fourth Proportional to 10,120.55, 13,966.43 and 6,138.99

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Solution

The fourth proportional to 10,120.55, 13,966.43 and 6,138.99 is: 8,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.55 : 13,966.43 = 6,138.99 : x
  2. Step 2: Convert to fraction form
    10,120.55/13,966.43 = 6,138.99/x
  3. Step 3: Cross multiply
    10,120.55x = 13,966.43 × 6,138.99
  4. Step 4: Simplify right side
    10,120.55x = 85,739,743.41
  5. Step 5: Solve for x
    x = 85,739,743.41/10,120.55
  6. Step 6: Final answer
    x = 8,471.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.