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Finding the Fourth Proportional to 12,297.88, 18,432.78 and 5,275.72

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Solution

The fourth proportional to 12,297.88, 18,432.78 and 5,275.72 is: 7,907.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,297.88 : 18,432.78 = 5,275.72 : x
  2. Step 2: Convert to fraction form
    12,297.88/18,432.78 = 5,275.72/x
  3. Step 3: Cross multiply
    12,297.88x = 18,432.78 × 5,275.72
  4. Step 4: Simplify right side
    12,297.88x = 97,246,186.10
  5. Step 5: Solve for x
    x = 97,246,186.10/12,297.88
  6. Step 6: Final answer
    x = 7,907.56

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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.