Home / 20,674.28-28,514.88-14,311.52

Finding the Fourth Proportional to 20,674.28, 28,514.88 and 14,311.52

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Solution

The fourth proportional to 20,674.28, 28,514.88 and 14,311.52 is: 19,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.28 : 28,514.88 = 14,311.52 : x
  2. Step 2: Convert to fraction form
    20,674.28/28,514.88 = 14,311.52/x
  3. Step 3: Cross multiply
    20,674.28x = 28,514.88 × 14,311.52
  4. Step 4: Simplify right side
    20,674.28x = 408,091,275.42
  5. Step 5: Solve for x
    x = 408,091,275.42/20,674.28
  6. Step 6: Final answer
    x = 19,739.08

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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.