Home / 28,037.10-38,690.94-15,290.55

Finding the Fourth Proportional to 28,037.10, 38,690.94 and 15,290.55

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Solution

The fourth proportional to 28,037.10, 38,690.94 and 15,290.55 is: 21,100.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.10 : 38,690.94 = 15,290.55 : x
  2. Step 2: Convert to fraction form
    28,037.10/38,690.94 = 15,290.55/x
  3. Step 3: Cross multiply
    28,037.10x = 38,690.94 × 15,290.55
  4. Step 4: Simplify right side
    28,037.10x = 591,605,752.62
  5. Step 5: Solve for x
    x = 591,605,752.62/28,037.10
  6. Step 6: Final answer
    x = 21,100.82

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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.