Home / 12,681.28-19,016.13-6,756.66

Finding the Fourth Proportional to 12,681.28, 19,016.13 and 6,756.66

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Solution

The fourth proportional to 12,681.28, 19,016.13 and 6,756.66 is: 10,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.28 : 19,016.13 = 6,756.66 : x
  2. Step 2: Convert to fraction form
    12,681.28/19,016.13 = 6,756.66/x
  3. Step 3: Cross multiply
    12,681.28x = 19,016.13 × 6,756.66
  4. Step 4: Simplify right side
    12,681.28x = 128,485,524.93
  5. Step 5: Solve for x
    x = 128,485,524.93/12,681.28
  6. Step 6: Final answer
    x = 10,131.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.