Home / 20,713.53-28,584.72-11,281.89

Finding the Fourth Proportional to 20,713.53, 28,584.72 and 11,281.89

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Solution

The fourth proportional to 20,713.53, 28,584.72 and 11,281.89 is: 15,569.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.53 : 28,584.72 = 11,281.89 : x
  2. Step 2: Convert to fraction form
    20,713.53/28,584.72 = 11,281.89/x
  3. Step 3: Cross multiply
    20,713.53x = 28,584.72 × 11,281.89
  4. Step 4: Simplify right side
    20,713.53x = 322,489,666.72
  5. Step 5: Solve for x
    x = 322,489,666.72/20,713.53
  6. Step 6: Final answer
    x = 15,569.03

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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.