Home / 28,061.40-38,725.64-15,961.57

Finding the Fourth Proportional to 28,061.40, 38,725.64 and 15,961.57

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Solution

The fourth proportional to 28,061.40, 38,725.64 and 15,961.57 is: 22,027.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.40 : 38,725.64 = 15,961.57 : x
  2. Step 2: Convert to fraction form
    28,061.40/38,725.64 = 15,961.57/x
  3. Step 3: Cross multiply
    28,061.40x = 38,725.64 × 15,961.57
  4. Step 4: Simplify right side
    28,061.40x = 618,121,933.85
  5. Step 5: Solve for x
    x = 618,121,933.85/28,061.40
  6. Step 6: Final answer
    x = 22,027.48

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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.