Home / 12,278.18-16,943.98-6,689.18

Finding the Fourth Proportional to 12,278.18, 16,943.98 and 6,689.18

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Solution

The fourth proportional to 12,278.18, 16,943.98 and 6,689.18 is: 9,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.18 : 16,943.98 = 6,689.18 : x
  2. Step 2: Convert to fraction form
    12,278.18/16,943.98 = 6,689.18/x
  3. Step 3: Cross multiply
    12,278.18x = 16,943.98 × 6,689.18
  4. Step 4: Simplify right side
    12,278.18x = 113,341,332.14
  5. Step 5: Solve for x
    x = 113,341,332.14/12,278.18
  6. Step 6: Final answer
    x = 9,231.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.