Home / 28,166.44-38,869.14-15,591.28

Finding the Fourth Proportional to 28,166.44, 38,869.14 and 15,591.28

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Solution

The fourth proportional to 28,166.44, 38,869.14 and 15,591.28 is: 21,515.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.44 : 38,869.14 = 15,591.28 : x
  2. Step 2: Convert to fraction form
    28,166.44/38,869.14 = 15,591.28/x
  3. Step 3: Cross multiply
    28,166.44x = 38,869.14 × 15,591.28
  4. Step 4: Simplify right side
    28,166.44x = 606,019,645.10
  5. Step 5: Solve for x
    x = 606,019,645.10/28,166.44
  6. Step 6: Final answer
    x = 21,515.66

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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.