Home / 28,297.20-42,445.80-8,574.78

Finding the Fourth Proportional to 28,297.20, 42,445.80 and 8,574.78

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Solution

The fourth proportional to 28,297.20, 42,445.80 and 8,574.78 is: 12,862.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.20 : 42,445.80 = 8,574.78 : x
  2. Step 2: Convert to fraction form
    28,297.20/42,445.80 = 8,574.78/x
  3. Step 3: Cross multiply
    28,297.20x = 42,445.80 × 8,574.78
  4. Step 4: Simplify right side
    28,297.20x = 363,963,396.92
  5. Step 5: Solve for x
    x = 363,963,396.92/28,297.20
  6. Step 6: Final answer
    x = 12,862.17

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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.