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Finding the Fourth Proportional to 12,612.17, 18,918.29 and 12,593.95

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Solution

The fourth proportional to 12,612.17, 18,918.29 and 12,593.95 is: 18,890.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,612.17 : 18,918.29 = 12,593.95 : x
  2. Step 2: Convert to fraction form
    12,612.17/18,918.29 = 12,593.95/x
  3. Step 3: Cross multiply
    12,612.17x = 18,918.29 × 12,593.95
  4. Step 4: Simplify right side
    12,612.17x = 238,255,982.53
  5. Step 5: Solve for x
    x = 238,255,982.53/12,612.17
  6. Step 6: Final answer
    x = 18,890.95

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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.