Home / 10,062.12-13,889.45-8,640.09

Finding the Fourth Proportional to 10,062.12, 13,889.45 and 8,640.09

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Solution

The fourth proportional to 10,062.12, 13,889.45 and 8,640.09 is: 11,926.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,062.12 : 13,889.45 = 8,640.09 : x
  2. Step 2: Convert to fraction form
    10,062.12/13,889.45 = 8,640.09/x
  3. Step 3: Cross multiply
    10,062.12x = 13,889.45 × 8,640.09
  4. Step 4: Simplify right side
    10,062.12x = 120,006,134.41
  5. Step 5: Solve for x
    x = 120,006,134.41/10,062.12
  6. Step 6: Final answer
    x = 11,926.53

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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.