Home / 12,538.56-18,807.48-5,140.92

Finding the Fourth Proportional to 12,538.56, 18,807.48 and 5,140.92

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Solution

The fourth proportional to 12,538.56, 18,807.48 and 5,140.92 is: 7,711.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.56 : 18,807.48 = 5,140.92 : x
  2. Step 2: Convert to fraction form
    12,538.56/18,807.48 = 5,140.92/x
  3. Step 3: Cross multiply
    12,538.56x = 18,807.48 × 5,140.92
  4. Step 4: Simplify right side
    12,538.56x = 96,687,750.08
  5. Step 5: Solve for x
    x = 96,687,750.08/12,538.56
  6. Step 6: Final answer
    x = 7,711.23

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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.