Home / 12,177.70-16,805.45-6,871.49

Finding the Fourth Proportional to 12,177.70, 16,805.45 and 6,871.49

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Solution

The fourth proportional to 12,177.70, 16,805.45 and 6,871.49 is: 9,482.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,177.70 : 16,805.45 = 6,871.49 : x
  2. Step 2: Convert to fraction form
    12,177.70/16,805.45 = 6,871.49/x
  3. Step 3: Cross multiply
    12,177.70x = 16,805.45 × 6,871.49
  4. Step 4: Simplify right side
    12,177.70x = 115,478,523.63
  5. Step 5: Solve for x
    x = 115,478,523.63/12,177.70
  6. Step 6: Final answer
    x = 9,482.79

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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.