Home / 9,939.12-13,716.36-5,747.40

Finding the Fourth Proportional to 9,939.12, 13,716.36 and 5,747.40

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Solution

The fourth proportional to 9,939.12, 13,716.36 and 5,747.40 is: 7,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.12 : 13,716.36 = 5,747.40 : x
  2. Step 2: Convert to fraction form
    9,939.12/13,716.36 = 5,747.40/x
  3. Step 3: Cross multiply
    9,939.12x = 13,716.36 × 5,747.40
  4. Step 4: Simplify right side
    9,939.12x = 78,833,407.46
  5. Step 5: Solve for x
    x = 78,833,407.46/9,939.12
  6. Step 6: Final answer
    x = 7,931.63

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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.