Home / 28,407.38-39,202.46-15,661.07

Finding the Fourth Proportional to 28,407.38, 39,202.46 and 15,661.07

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Solution

The fourth proportional to 28,407.38, 39,202.46 and 15,661.07 is: 21,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.38 : 39,202.46 = 15,661.07 : x
  2. Step 2: Convert to fraction form
    28,407.38/39,202.46 = 15,661.07/x
  3. Step 3: Cross multiply
    28,407.38x = 39,202.46 × 15,661.07
  4. Step 4: Simplify right side
    28,407.38x = 613,952,607.39
  5. Step 5: Solve for x
    x = 613,952,607.39/28,407.38
  6. Step 6: Final answer
    x = 21,612.43

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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.