Home / 20,666.24-28,471.20-14,367.68

Finding the Fourth Proportional to 20,666.24, 28,471.20 and 14,367.68

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Solution

The fourth proportional to 20,666.24, 28,471.20 and 14,367.68 is: 19,793.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.24 : 28,471.20 = 14,367.68 : x
  2. Step 2: Convert to fraction form
    20,666.24/28,471.20 = 14,367.68/x
  3. Step 3: Cross multiply
    20,666.24x = 28,471.20 × 14,367.68
  4. Step 4: Simplify right side
    20,666.24x = 409,065,090.82
  5. Step 5: Solve for x
    x = 409,065,090.82/20,666.24
  6. Step 6: Final answer
    x = 19,793.88

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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.