Home / 12,384-18,577.68-3,617.76

Finding the Fourth Proportional to 12,384, 18,577.68 and 3,617.76

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Solution

The fourth proportional to 12,384, 18,577.68 and 3,617.76 is: 5,427.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,384 : 18,577.68 = 3,617.76 : x
  2. Step 2: Convert to fraction form
    12,384/18,577.68 = 3,617.76/x
  3. Step 3: Cross multiply
    12,384x = 18,577.68 × 3,617.76
  4. Step 4: Simplify right side
    12,384x = 67,209,587.60
  5. Step 5: Solve for x
    x = 67,209,587.60/12,384
  6. Step 6: Final answer
    x = 5,427.13

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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.