Home / 28,385.61-42,578.20-7,323.86

Finding the Fourth Proportional to 28,385.61, 42,578.20 and 7,323.86

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Solution

The fourth proportional to 28,385.61, 42,578.20 and 7,323.86 is: 10,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.61 : 42,578.20 = 7,323.86 : x
  2. Step 2: Convert to fraction form
    28,385.61/42,578.20 = 7,323.86/x
  3. Step 3: Cross multiply
    28,385.61x = 42,578.20 × 7,323.86
  4. Step 4: Simplify right side
    28,385.61x = 311,836,775.85
  5. Step 5: Solve for x
    x = 311,836,775.85/28,385.61
  6. Step 6: Final answer
    x = 10,985.73

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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.