Home / 10,185.18-15,285.45-8,157.66

Finding the Fourth Proportional to 10,185.18, 15,285.45 and 8,157.66

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Solution

The fourth proportional to 10,185.18, 15,285.45 and 8,157.66 is: 12,242.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.18 : 15,285.45 = 8,157.66 : x
  2. Step 2: Convert to fraction form
    10,185.18/15,285.45 = 8,157.66/x
  3. Step 3: Cross multiply
    10,185.18x = 15,285.45 × 8,157.66
  4. Step 4: Simplify right side
    10,185.18x = 124,693,504.05
  5. Step 5: Solve for x
    x = 124,693,504.05/10,185.18
  6. Step 6: Final answer
    x = 12,242.64

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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.