Home / 28,219.20-42,312.60-8,494.80

Finding the Fourth Proportional to 28,219.20, 42,312.60 and 8,494.80

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Solution

The fourth proportional to 28,219.20, 42,312.60 and 8,494.80 is: 12,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.20 : 42,312.60 = 8,494.80 : x
  2. Step 2: Convert to fraction form
    28,219.20/42,312.60 = 8,494.80/x
  3. Step 3: Cross multiply
    28,219.20x = 42,312.60 × 8,494.80
  4. Step 4: Simplify right side
    28,219.20x = 359,437,074.48
  5. Step 5: Solve for x
    x = 359,437,074.48/28,219.20
  6. Step 6: Final answer
    x = 12,737.32

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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.