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Finding the Fourth Proportional to 12,207.95, 18,312.07 and 4,304.92

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Solution

The fourth proportional to 12,207.95, 18,312.07 and 4,304.92 is: 6,457.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.95 : 18,312.07 = 4,304.92 : x
  2. Step 2: Convert to fraction form
    12,207.95/18,312.07 = 4,304.92/x
  3. Step 3: Cross multiply
    12,207.95x = 18,312.07 × 4,304.92
  4. Step 4: Simplify right side
    12,207.95x = 78,831,993.22
  5. Step 5: Solve for x
    x = 78,831,993.22/12,207.95
  6. Step 6: Final answer
    x = 6,457.43

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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.