Home / 12,492.90-18,720.15-10,841.70

Finding the Fourth Proportional to 12,492.90, 18,720.15 and 10,841.70

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Solution

The fourth proportional to 12,492.90, 18,720.15 and 10,841.70 is: 16,245.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.90 : 18,720.15 = 10,841.70 : x
  2. Step 2: Convert to fraction form
    12,492.90/18,720.15 = 10,841.70/x
  3. Step 3: Cross multiply
    12,492.90x = 18,720.15 × 10,841.70
  4. Step 4: Simplify right side
    12,492.90x = 202,958,250.26
  5. Step 5: Solve for x
    x = 202,958,250.26/12,492.90
  6. Step 6: Final answer
    x = 16,245.89

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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.