Home / 28,330.50-39,096.09-15,755.25

Finding the Fourth Proportional to 28,330.50, 39,096.09 and 15,755.25

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Solution

The fourth proportional to 28,330.50, 39,096.09 and 15,755.25 is: 21,742.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.50 : 39,096.09 = 15,755.25 : x
  2. Step 2: Convert to fraction form
    28,330.50/39,096.09 = 15,755.25/x
  3. Step 3: Cross multiply
    28,330.50x = 39,096.09 × 15,755.25
  4. Step 4: Simplify right side
    28,330.50x = 615,968,671.97
  5. Step 5: Solve for x
    x = 615,968,671.97/28,330.50
  6. Step 6: Final answer
    x = 21,742.25

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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.