Home / 28,204.95-38,922.75-15,629.70

Finding the Fourth Proportional to 28,204.95, 38,922.75 and 15,629.70

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Solution

The fourth proportional to 28,204.95, 38,922.75 and 15,629.70 is: 21,568.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.95 : 38,922.75 = 15,629.70 : x
  2. Step 2: Convert to fraction form
    28,204.95/38,922.75 = 15,629.70/x
  3. Step 3: Cross multiply
    28,204.95x = 38,922.75 × 15,629.70
  4. Step 4: Simplify right side
    28,204.95x = 608,350,905.68
  5. Step 5: Solve for x
    x = 608,350,905.68/28,204.95
  6. Step 6: Final answer
    x = 21,568.94

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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.