Home / 28,508.15-39,339.54-15,760.56

Finding the Fourth Proportional to 28,508.15, 39,339.54 and 15,760.56

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Solution

The fourth proportional to 28,508.15, 39,339.54 and 15,760.56 is: 21,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.15 : 39,339.54 = 15,760.56 : x
  2. Step 2: Convert to fraction form
    28,508.15/39,339.54 = 15,760.56/x
  3. Step 3: Cross multiply
    28,508.15x = 39,339.54 × 15,760.56
  4. Step 4: Simplify right side
    28,508.15x = 620,013,180.54
  5. Step 5: Solve for x
    x = 620,013,180.54/28,508.15
  6. Step 6: Final answer
    x = 21,748.63

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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.