Home / 10,079.85-15,101.55-8,220.90

Finding the Fourth Proportional to 10,079.85, 15,101.55 and 8,220.90

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Solution

The fourth proportional to 10,079.85, 15,101.55 and 8,220.90 is: 12,316.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.85 : 15,101.55 = 8,220.90 : x
  2. Step 2: Convert to fraction form
    10,079.85/15,101.55 = 8,220.90/x
  3. Step 3: Cross multiply
    10,079.85x = 15,101.55 × 8,220.90
  4. Step 4: Simplify right side
    10,079.85x = 124,148,332.40
  5. Step 5: Solve for x
    x = 124,148,332.40/10,079.85
  6. Step 6: Final answer
    x = 12,316.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.