Home / 12,387.03-18,575.69-4,990.11

Finding the Fourth Proportional to 12,387.03, 18,575.69 and 4,990.11

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Solution

The fourth proportional to 12,387.03, 18,575.69 and 4,990.11 is: 7,483.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.03 : 18,575.69 = 4,990.11 : x
  2. Step 2: Convert to fraction form
    12,387.03/18,575.69 = 4,990.11/x
  3. Step 3: Cross multiply
    12,387.03x = 18,575.69 × 4,990.11
  4. Step 4: Simplify right side
    12,387.03x = 92,694,711.48
  5. Step 5: Solve for x
    x = 92,694,711.48/12,387.03
  6. Step 6: Final answer
    x = 7,483.21

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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.