Home / 28,043.85-42,073.20-12,242.10

Finding the Fourth Proportional to 28,043.85, 42,073.20 and 12,242.10

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Solution

The fourth proportional to 28,043.85, 42,073.20 and 12,242.10 is: 18,366.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.85 : 42,073.20 = 12,242.10 : x
  2. Step 2: Convert to fraction form
    28,043.85/42,073.20 = 12,242.10/x
  3. Step 3: Cross multiply
    28,043.85x = 42,073.20 × 12,242.10
  4. Step 4: Simplify right side
    28,043.85x = 515,064,321.72
  5. Step 5: Solve for x
    x = 515,064,321.72/28,043.85
  6. Step 6: Final answer
    x = 18,366.39

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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.