Home / 14,711.48-20,301.36-8,422.64

Finding the Fourth Proportional to 14,711.48, 20,301.36 and 8,422.64

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Solution

The fourth proportional to 14,711.48, 20,301.36 and 8,422.64 is: 11,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,711.48 : 20,301.36 = 8,422.64 : x
  2. Step 2: Convert to fraction form
    14,711.48/20,301.36 = 8,422.64/x
  3. Step 3: Cross multiply
    14,711.48x = 20,301.36 × 8,422.64
  4. Step 4: Simplify right side
    14,711.48x = 170,991,046.79
  5. Step 5: Solve for x
    x = 170,991,046.79/14,711.48
  6. Step 6: Final answer
    x = 11,622.97

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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.