Home / 28,512.64-39,347.42-15,937.38

Finding the Fourth Proportional to 28,512.64, 39,347.42 and 15,937.38

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Solution

The fourth proportional to 28,512.64, 39,347.42 and 15,937.38 is: 21,993.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.64 : 39,347.42 = 15,937.38 : x
  2. Step 2: Convert to fraction form
    28,512.64/39,347.42 = 15,937.38/x
  3. Step 3: Cross multiply
    28,512.64x = 39,347.42 × 15,937.38
  4. Step 4: Simplify right side
    28,512.64x = 627,094,784.56
  5. Step 5: Solve for x
    x = 627,094,784.56/28,512.64
  6. Step 6: Final answer
    x = 21,993.57

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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.