Home / 12,278.29-18,417.46-3,958.91

Finding the Fourth Proportional to 12,278.29, 18,417.46 and 3,958.91

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Solution

The fourth proportional to 12,278.29, 18,417.46 and 3,958.91 is: 5,938.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.29 : 18,417.46 = 3,958.91 : x
  2. Step 2: Convert to fraction form
    12,278.29/18,417.46 = 3,958.91/x
  3. Step 3: Cross multiply
    12,278.29x = 18,417.46 × 3,958.91
  4. Step 4: Simplify right side
    12,278.29x = 72,913,066.57
  5. Step 5: Solve for x
    x = 72,913,066.57/12,278.29
  6. Step 6: Final answer
    x = 5,938.38

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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.