Home / 12,131.80-16,741.56-6,827.76

Finding the Fourth Proportional to 12,131.80, 16,741.56 and 6,827.76

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Solution

The fourth proportional to 12,131.80, 16,741.56 and 6,827.76 is: 9,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.80 : 16,741.56 = 6,827.76 : x
  2. Step 2: Convert to fraction form
    12,131.80/16,741.56 = 6,827.76/x
  3. Step 3: Cross multiply
    12,131.80x = 16,741.56 × 6,827.76
  4. Step 4: Simplify right side
    12,131.80x = 114,307,353.71
  5. Step 5: Solve for x
    x = 114,307,353.71/12,131.80
  6. Step 6: Final answer
    x = 9,422.13

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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.