Home / 12,428.76-18,646.06-4,108.78

Finding the Fourth Proportional to 12,428.76, 18,646.06 and 4,108.78

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Solution

The fourth proportional to 12,428.76, 18,646.06 and 4,108.78 is: 6,164.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.76 : 18,646.06 = 4,108.78 : x
  2. Step 2: Convert to fraction form
    12,428.76/18,646.06 = 4,108.78/x
  3. Step 3: Cross multiply
    12,428.76x = 18,646.06 × 4,108.78
  4. Step 4: Simplify right side
    12,428.76x = 76,612,516.93
  5. Step 5: Solve for x
    x = 76,612,516.93/12,428.76
  6. Step 6: Final answer
    x = 6,164.13

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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.