Home / 12,438.11-18,657.13-5,042.56

Finding the Fourth Proportional to 12,438.11, 18,657.13 and 5,042.56

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Solution

The fourth proportional to 12,438.11, 18,657.13 and 5,042.56 is: 7,563.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.11 : 18,657.13 = 5,042.56 : x
  2. Step 2: Convert to fraction form
    12,438.11/18,657.13 = 5,042.56/x
  3. Step 3: Cross multiply
    12,438.11x = 18,657.13 × 5,042.56
  4. Step 4: Simplify right side
    12,438.11x = 94,079,603.22
  5. Step 5: Solve for x
    x = 94,079,603.22/12,438.11
  6. Step 6: Final answer
    x = 7,563.82

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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.