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Finding the Fourth Proportional to 18,160.61, 27,224.48 and 12,616.55

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Solution

The fourth proportional to 18,160.61, 27,224.48 and 12,616.55 is: 18,913.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,160.61 : 27,224.48 = 12,616.55 : x
  2. Step 2: Convert to fraction form
    18,160.61/27,224.48 = 12,616.55/x
  3. Step 3: Cross multiply
    18,160.61x = 27,224.48 × 12,616.55
  4. Step 4: Simplify right side
    18,160.61x = 343,478,950.06
  5. Step 5: Solve for x
    x = 343,478,950.06/18,160.61
  6. Step 6: Final answer
    x = 18,913.40

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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.