Home / 12,531.20-18,784.44-5,515

Finding the Fourth Proportional to 12,531.20, 18,784.44 and 5,515

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Solution

The fourth proportional to 12,531.20, 18,784.44 and 5,515 is: 8,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.20 : 18,784.44 = 5,515 : x
  2. Step 2: Convert to fraction form
    12,531.20/18,784.44 = 5,515/x
  3. Step 3: Cross multiply
    12,531.20x = 18,784.44 × 5,515
  4. Step 4: Simplify right side
    12,531.20x = 103,596,186.60
  5. Step 5: Solve for x
    x = 103,596,186.60/12,531.20
  6. Step 6: Final answer
    x = 8,267.06

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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.