Home / 20,425.46-28,197.88-13,746.20

Finding the Fourth Proportional to 20,425.46, 28,197.88 and 13,746.20

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Solution

The fourth proportional to 20,425.46, 28,197.88 and 13,746.20 is: 18,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.46 : 28,197.88 = 13,746.20 : x
  2. Step 2: Convert to fraction form
    20,425.46/28,197.88 = 13,746.20/x
  3. Step 3: Cross multiply
    20,425.46x = 28,197.88 × 13,746.20
  4. Step 4: Simplify right side
    20,425.46x = 387,613,698.06
  5. Step 5: Solve for x
    x = 387,613,698.06/20,425.46
  6. Step 6: Final answer
    x = 18,976.99

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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.