Home / 12,278.17-16,939.09-6,972.27

Finding the Fourth Proportional to 12,278.17, 16,939.09 and 6,972.27

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Solution

The fourth proportional to 12,278.17, 16,939.09 and 6,972.27 is: 9,619.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,278.17 : 16,939.09 = 6,972.27 : x
  2. Step 2: Convert to fraction form
    12,278.17/16,939.09 = 6,972.27/x
  3. Step 3: Cross multiply
    12,278.17x = 16,939.09 × 6,972.27
  4. Step 4: Simplify right side
    12,278.17x = 118,103,909.03
  5. Step 5: Solve for x
    x = 118,103,909.03/12,278.17
  6. Step 6: Final answer
    x = 9,619.02

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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.