Home / 28,219.71-42,292.43-15,745.61

Finding the Fourth Proportional to 28,219.71, 42,292.43 and 15,745.61

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Solution

The fourth proportional to 28,219.71, 42,292.43 and 15,745.61 is: 23,597.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.71 : 42,292.43 = 15,745.61 : x
  2. Step 2: Convert to fraction form
    28,219.71/42,292.43 = 15,745.61/x
  3. Step 3: Cross multiply
    28,219.71x = 42,292.43 × 15,745.61
  4. Step 4: Simplify right side
    28,219.71x = 665,919,818.54
  5. Step 5: Solve for x
    x = 665,919,818.54/28,219.71
  6. Step 6: Final answer
    x = 23,597.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.