Home / 12,187.98-16,818.60-6,881.76

Finding the Fourth Proportional to 12,187.98, 16,818.60 and 6,881.76

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Solution

The fourth proportional to 12,187.98, 16,818.60 and 6,881.76 is: 9,496.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.98 : 16,818.60 = 6,881.76 : x
  2. Step 2: Convert to fraction form
    12,187.98/16,818.60 = 6,881.76/x
  3. Step 3: Cross multiply
    12,187.98x = 16,818.60 × 6,881.76
  4. Step 4: Simplify right side
    12,187.98x = 115,741,568.74
  5. Step 5: Solve for x
    x = 115,741,568.74/12,187.98
  6. Step 6: Final answer
    x = 9,496.37

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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.