Home / 12,387.17-18,583.38-3,621.35

Finding the Fourth Proportional to 12,387.17, 18,583.38 and 3,621.35

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Solution

The fourth proportional to 12,387.17, 18,583.38 and 3,621.35 is: 5,432.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.17 : 18,583.38 = 3,621.35 : x
  2. Step 2: Convert to fraction form
    12,387.17/18,583.38 = 3,621.35/x
  3. Step 3: Cross multiply
    12,387.17x = 18,583.38 × 3,621.35
  4. Step 4: Simplify right side
    12,387.17x = 67,296,830.25
  5. Step 5: Solve for x
    x = 67,296,830.25/12,387.17
  6. Step 6: Final answer
    x = 5,432.79

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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.