Home / 20,684.28-28,528.68-14,321.52

Finding the Fourth Proportional to 20,684.28, 28,528.68 and 14,321.52

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Solution

The fourth proportional to 20,684.28, 28,528.68 and 14,321.52 is: 19,752.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.28 : 28,528.68 = 14,321.52 : x
  2. Step 2: Convert to fraction form
    20,684.28/28,528.68 = 14,321.52/x
  3. Step 3: Cross multiply
    20,684.28x = 28,528.68 × 14,321.52
  4. Step 4: Simplify right side
    20,684.28x = 408,574,061.19
  5. Step 5: Solve for x
    x = 408,574,061.19/20,684.28
  6. Step 6: Final answer
    x = 19,752.88

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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.