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Finding the Fourth Proportional to 12,444.90, 18,637.48 and 7,163.88

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Solution

The fourth proportional to 12,444.90, 18,637.48 and 7,163.88 is: 10,728.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.90 : 18,637.48 = 7,163.88 : x
  2. Step 2: Convert to fraction form
    12,444.90/18,637.48 = 7,163.88/x
  3. Step 3: Cross multiply
    12,444.90x = 18,637.48 × 7,163.88
  4. Step 4: Simplify right side
    12,444.90x = 133,516,670.22
  5. Step 5: Solve for x
    x = 133,516,670.22/12,444.90
  6. Step 6: Final answer
    x = 10,728.63

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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.