Home / 13,437.91-20,126.12-6,422.86

Finding the Fourth Proportional to 13,437.91, 20,126.12 and 6,422.86

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Solution

The fourth proportional to 13,437.91, 20,126.12 and 6,422.86 is: 9,619.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.91 : 20,126.12 = 6,422.86 : x
  2. Step 2: Convert to fraction form
    13,437.91/20,126.12 = 6,422.86/x
  3. Step 3: Cross multiply
    13,437.91x = 20,126.12 × 6,422.86
  4. Step 4: Simplify right side
    13,437.91x = 129,267,118.36
  5. Step 5: Solve for x
    x = 129,267,118.36/13,437.91
  6. Step 6: Final answer
    x = 9,619.59

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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.