Home / 28,330.64-39,096.16-15,755.38

Finding the Fourth Proportional to 28,330.64, 39,096.16 and 15,755.38

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Solution

The fourth proportional to 28,330.64, 39,096.16 and 15,755.38 is: 21,742.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.64 : 39,096.16 = 15,755.38 : x
  2. Step 2: Convert to fraction form
    28,330.64/39,096.16 = 15,755.38/x
  3. Step 3: Cross multiply
    28,330.64x = 39,096.16 × 15,755.38
  4. Step 4: Simplify right side
    28,330.64x = 615,974,857.34
  5. Step 5: Solve for x
    x = 615,974,857.34/28,330.64
  6. Step 6: Final answer
    x = 21,742.36

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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.