Home / 12,577.13-18,868.40-3,812.74

Finding the Fourth Proportional to 12,577.13, 18,868.40 and 3,812.74

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Solution

The fourth proportional to 12,577.13, 18,868.40 and 3,812.74 is: 5,719.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,577.13 : 18,868.40 = 3,812.74 : x
  2. Step 2: Convert to fraction form
    12,577.13/18,868.40 = 3,812.74/x
  3. Step 3: Cross multiply
    12,577.13x = 18,868.40 × 3,812.74
  4. Step 4: Simplify right side
    12,577.13x = 71,940,303.42
  5. Step 5: Solve for x
    x = 71,940,303.42/12,577.13
  6. Step 6: Final answer
    x = 5,719.93

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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.