Home / 10,771.57-16,129.20-10,114.66

Finding the Fourth Proportional to 10,771.57, 16,129.20 and 10,114.66

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Solution

The fourth proportional to 10,771.57, 16,129.20 and 10,114.66 is: 15,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,771.57 : 16,129.20 = 10,114.66 : x
  2. Step 2: Convert to fraction form
    10,771.57/16,129.20 = 10,114.66/x
  3. Step 3: Cross multiply
    10,771.57x = 16,129.20 × 10,114.66
  4. Step 4: Simplify right side
    10,771.57x = 163,141,374.07
  5. Step 5: Solve for x
    x = 163,141,374.07/10,771.57
  6. Step 6: Final answer
    x = 15,145.55

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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.