Home / 20,883.49-28,781.53-15,209.24

Finding the Fourth Proportional to 20,883.49, 28,781.53 and 15,209.24

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Solution

The fourth proportional to 20,883.49, 28,781.53 and 15,209.24 is: 20,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.49 : 28,781.53 = 15,209.24 : x
  2. Step 2: Convert to fraction form
    20,883.49/28,781.53 = 15,209.24/x
  3. Step 3: Cross multiply
    20,883.49x = 28,781.53 × 15,209.24
  4. Step 4: Simplify right side
    20,883.49x = 437,745,015.41
  5. Step 5: Solve for x
    x = 437,745,015.41/20,883.49
  6. Step 6: Final answer
    x = 20,961.30

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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.