Home / 20,343.28-28,074.18-14,385.64

Finding the Fourth Proportional to 20,343.28, 28,074.18 and 14,385.64

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Solution

The fourth proportional to 20,343.28, 28,074.18 and 14,385.64 is: 19,852.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.28 : 28,074.18 = 14,385.64 : x
  2. Step 2: Convert to fraction form
    20,343.28/28,074.18 = 14,385.64/x
  3. Step 3: Cross multiply
    20,343.28x = 28,074.18 × 14,385.64
  4. Step 4: Simplify right side
    20,343.28x = 403,865,046.78
  5. Step 5: Solve for x
    x = 403,865,046.78/20,343.28
  6. Step 6: Final answer
    x = 19,852.50

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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.