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Finding the Fourth Proportional to 12,275.95, 16,938.21 and 8,493.04

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Solution

The fourth proportional to 12,275.95, 16,938.21 and 8,493.04 is: 11,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.95 : 16,938.21 = 8,493.04 : x
  2. Step 2: Convert to fraction form
    12,275.95/16,938.21 = 8,493.04/x
  3. Step 3: Cross multiply
    12,275.95x = 16,938.21 × 8,493.04
  4. Step 4: Simplify right side
    12,275.95x = 143,856,895.06
  5. Step 5: Solve for x
    x = 143,856,895.06/12,275.95
  6. Step 6: Final answer
    x = 11,718.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.