Home / 28,211.86-42,320.61-10,447.28

Finding the Fourth Proportional to 28,211.86, 42,320.61 and 10,447.28

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Solution

The fourth proportional to 28,211.86, 42,320.61 and 10,447.28 is: 15,671.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.86 : 42,320.61 = 10,447.28 : x
  2. Step 2: Convert to fraction form
    28,211.86/42,320.61 = 10,447.28/x
  3. Step 3: Cross multiply
    28,211.86x = 42,320.61 × 10,447.28
  4. Step 4: Simplify right side
    28,211.86x = 442,135,262.44
  5. Step 5: Solve for x
    x = 442,135,262.44/28,211.86
  6. Step 6: Final answer
    x = 15,671.96

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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.