Home / 9,939.26-13,715.70-5,747.60

Finding the Fourth Proportional to 9,939.26, 13,715.70 and 5,747.60

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Solution

The fourth proportional to 9,939.26, 13,715.70 and 5,747.60 is: 7,931.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.26 : 13,715.70 = 5,747.60 : x
  2. Step 2: Convert to fraction form
    9,939.26/13,715.70 = 5,747.60/x
  3. Step 3: Cross multiply
    9,939.26x = 13,715.70 × 5,747.60
  4. Step 4: Simplify right side
    9,939.26x = 78,832,357.32
  5. Step 5: Solve for x
    x = 78,832,357.32/9,939.26
  6. Step 6: Final answer
    x = 7,931.41

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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.