Home / 28,137.35-42,217.68-12,334.20

Finding the Fourth Proportional to 28,137.35, 42,217.68 and 12,334.20

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Solution

The fourth proportional to 28,137.35, 42,217.68 and 12,334.20 is: 18,506.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.35 : 42,217.68 = 12,334.20 : x
  2. Step 2: Convert to fraction form
    28,137.35/42,217.68 = 12,334.20/x
  3. Step 3: Cross multiply
    28,137.35x = 42,217.68 × 12,334.20
  4. Step 4: Simplify right side
    28,137.35x = 520,721,308.66
  5. Step 5: Solve for x
    x = 520,721,308.66/28,137.35
  6. Step 6: Final answer
    x = 18,506.41

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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.