Home / 13,557.91-20,342.68-5,243.76

Finding the Fourth Proportional to 13,557.91, 20,342.68 and 5,243.76

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Solution

The fourth proportional to 13,557.91, 20,342.68 and 5,243.76 is: 7,867.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.91 : 20,342.68 = 5,243.76 : x
  2. Step 2: Convert to fraction form
    13,557.91/20,342.68 = 5,243.76/x
  3. Step 3: Cross multiply
    13,557.91x = 20,342.68 × 5,243.76
  4. Step 4: Simplify right side
    13,557.91x = 106,672,029.96
  5. Step 5: Solve for x
    x = 106,672,029.96/13,557.91
  6. Step 6: Final answer
    x = 7,867.88

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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.