Home / 10,121.16-13,965.88-5,644.68

Finding the Fourth Proportional to 10,121.16, 13,965.88 and 5,644.68

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Solution

The fourth proportional to 10,121.16, 13,965.88 and 5,644.68 is: 7,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.16 : 13,965.88 = 5,644.68 : x
  2. Step 2: Convert to fraction form
    10,121.16/13,965.88 = 5,644.68/x
  3. Step 3: Cross multiply
    10,121.16x = 13,965.88 × 5,644.68
  4. Step 4: Simplify right side
    10,121.16x = 78,832,923.52
  5. Step 5: Solve for x
    x = 78,832,923.52/10,121.16
  6. Step 6: Final answer
    x = 7,788.92

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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.