Home / 15,147.75-20,902.39-8,776.39

Finding the Fourth Proportional to 15,147.75, 20,902.39 and 8,776.39

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Solution

The fourth proportional to 15,147.75, 20,902.39 and 8,776.39 is: 12,110.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.75 : 20,902.39 = 8,776.39 : x
  2. Step 2: Convert to fraction form
    15,147.75/20,902.39 = 8,776.39/x
  3. Step 3: Cross multiply
    15,147.75x = 20,902.39 × 8,776.39
  4. Step 4: Simplify right side
    15,147.75x = 183,447,526.57
  5. Step 5: Solve for x
    x = 183,447,526.57/15,147.75
  6. Step 6: Final answer
    x = 12,110.55

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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.