Home / 10,220.10-15,308.55-8,276.10

Finding the Fourth Proportional to 10,220.10, 15,308.55 and 8,276.10

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Solution

The fourth proportional to 10,220.10, 15,308.55 and 8,276.10 is: 12,396.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.10 : 15,308.55 = 8,276.10 : x
  2. Step 2: Convert to fraction form
    10,220.10/15,308.55 = 8,276.10/x
  3. Step 3: Cross multiply
    10,220.10x = 15,308.55 × 8,276.10
  4. Step 4: Simplify right side
    10,220.10x = 126,695,090.66
  5. Step 5: Solve for x
    x = 126,695,090.66/10,220.10
  6. Step 6: Final answer
    x = 12,396.66

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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.