Home / 20,713.43-28,584.84-11,281.98

Finding the Fourth Proportional to 20,713.43, 28,584.84 and 11,281.98

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Solution

The fourth proportional to 20,713.43, 28,584.84 and 11,281.98 is: 15,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.43 : 28,584.84 = 11,281.98 : x
  2. Step 2: Convert to fraction form
    20,713.43/28,584.84 = 11,281.98/x
  3. Step 3: Cross multiply
    20,713.43x = 28,584.84 × 11,281.98
  4. Step 4: Simplify right side
    20,713.43x = 322,493,593.18
  5. Step 5: Solve for x
    x = 322,493,593.18/20,713.43
  6. Step 6: Final answer
    x = 15,569.30

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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.