Home / 20,617.50-28,452.15-11,186.06

Finding the Fourth Proportional to 20,617.50, 28,452.15 and 11,186.06

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Solution

The fourth proportional to 20,617.50, 28,452.15 and 11,186.06 is: 15,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.50 : 28,452.15 = 11,186.06 : x
  2. Step 2: Convert to fraction form
    20,617.50/28,452.15 = 11,186.06/x
  3. Step 3: Cross multiply
    20,617.50x = 28,452.15 × 11,186.06
  4. Step 4: Simplify right side
    20,617.50x = 318,267,528.16
  5. Step 5: Solve for x
    x = 318,267,528.16/20,617.50
  6. Step 6: Final answer
    x = 15,436.77

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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.