Home / 28,330.96-39,096.20-15,755.60

Finding the Fourth Proportional to 28,330.96, 39,096.20 and 15,755.60

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Solution

The fourth proportional to 28,330.96, 39,096.20 and 15,755.60 is: 21,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.96 : 39,096.20 = 15,755.60 : x
  2. Step 2: Convert to fraction form
    28,330.96/39,096.20 = 15,755.60/x
  3. Step 3: Cross multiply
    28,330.96x = 39,096.20 × 15,755.60
  4. Step 4: Simplify right side
    28,330.96x = 615,984,088.72
  5. Step 5: Solve for x
    x = 615,984,088.72/28,330.96
  6. Step 6: Final answer
    x = 21,742.44

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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.