Home / 20,822.30-28,716.61-14,760.55

Finding the Fourth Proportional to 20,822.30, 28,716.61 and 14,760.55

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Solution

The fourth proportional to 20,822.30, 28,716.61 and 14,760.55 is: 20,356.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.30 : 28,716.61 = 14,760.55 : x
  2. Step 2: Convert to fraction form
    20,822.30/28,716.61 = 14,760.55/x
  3. Step 3: Cross multiply
    20,822.30x = 28,716.61 × 14,760.55
  4. Step 4: Simplify right side
    20,822.30x = 423,872,957.74
  5. Step 5: Solve for x
    x = 423,872,957.74/20,822.30
  6. Step 6: Final answer
    x = 20,356.68

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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.