Home / 20,706.55-28,575.18-11,754.21

Finding the Fourth Proportional to 20,706.55, 28,575.18 and 11,754.21

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Solution

The fourth proportional to 20,706.55, 28,575.18 and 11,754.21 is: 16,220.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.55 : 28,575.18 = 11,754.21 : x
  2. Step 2: Convert to fraction form
    20,706.55/28,575.18 = 11,754.21/x
  3. Step 3: Cross multiply
    20,706.55x = 28,575.18 × 11,754.21
  4. Step 4: Simplify right side
    20,706.55x = 335,878,773.66
  5. Step 5: Solve for x
    x = 335,878,773.66/20,706.55
  6. Step 6: Final answer
    x = 16,220.89

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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.