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Finding the Fourth Proportional to 12,148.98, 18,156.91 and 8,868.98

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Solution

The fourth proportional to 12,148.98, 18,156.91 and 8,868.98 is: 13,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.98 : 18,156.91 = 8,868.98 : x
  2. Step 2: Convert to fraction form
    12,148.98/18,156.91 = 8,868.98/x
  3. Step 3: Cross multiply
    12,148.98x = 18,156.91 × 8,868.98
  4. Step 4: Simplify right side
    12,148.98x = 161,033,227.31
  5. Step 5: Solve for x
    x = 161,033,227.31/12,148.98
  6. Step 6: Final answer
    x = 13,254.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.