Home / 10,109.07-13,939.23-8,691.15

Finding the Fourth Proportional to 10,109.07, 13,939.23 and 8,691.15

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Solution

The fourth proportional to 10,109.07, 13,939.23 and 8,691.15 is: 11,984.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.07 : 13,939.23 = 8,691.15 : x
  2. Step 2: Convert to fraction form
    10,109.07/13,939.23 = 8,691.15/x
  3. Step 3: Cross multiply
    10,109.07x = 13,939.23 × 8,691.15
  4. Step 4: Simplify right side
    10,109.07x = 121,147,938.81
  5. Step 5: Solve for x
    x = 121,147,938.81/10,109.07
  6. Step 6: Final answer
    x = 11,984.08

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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.