Home / 12,398.29-18,595.66-4,078.64

Finding the Fourth Proportional to 12,398.29, 18,595.66 and 4,078.64

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Solution

The fourth proportional to 12,398.29, 18,595.66 and 4,078.64 is: 6,117.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.29 : 18,595.66 = 4,078.64 : x
  2. Step 2: Convert to fraction form
    12,398.29/18,595.66 = 4,078.64/x
  3. Step 3: Cross multiply
    12,398.29x = 18,595.66 × 4,078.64
  4. Step 4: Simplify right side
    12,398.29x = 75,845,002.70
  5. Step 5: Solve for x
    x = 75,845,002.70/12,398.29
  6. Step 6: Final answer
    x = 6,117.38

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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.