Home / 11,515.68-17,280.15-4,851.66

Finding the Fourth Proportional to 11,515.68, 17,280.15 and 4,851.66

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Solution

The fourth proportional to 11,515.68, 17,280.15 and 4,851.66 is: 7,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.68 : 17,280.15 = 4,851.66 : x
  2. Step 2: Convert to fraction form
    11,515.68/17,280.15 = 4,851.66/x
  3. Step 3: Cross multiply
    11,515.68x = 17,280.15 × 4,851.66
  4. Step 4: Simplify right side
    11,515.68x = 83,837,412.55
  5. Step 5: Solve for x
    x = 83,837,412.55/11,515.68
  6. Step 6: Final answer
    x = 7,280.28

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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.