Home / 10,681.28-15,998.48-8,811.36

Finding the Fourth Proportional to 10,681.28, 15,998.48 and 8,811.36

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Solution

The fourth proportional to 10,681.28, 15,998.48 and 8,811.36 is: 13,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.28 : 15,998.48 = 8,811.36 : x
  2. Step 2: Convert to fraction form
    10,681.28/15,998.48 = 8,811.36/x
  3. Step 3: Cross multiply
    10,681.28x = 15,998.48 × 8,811.36
  4. Step 4: Simplify right side
    10,681.28x = 140,968,366.73
  5. Step 5: Solve for x
    x = 140,968,366.73/10,681.28
  6. Step 6: Final answer
    x = 13,197.70

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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.