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Finding the Fourth Proportional to 18,292.59, 25,236.11 and 12,313.89

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Solution

The fourth proportional to 18,292.59, 25,236.11 and 12,313.89 is: 16,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.59 : 25,236.11 = 12,313.89 : x
  2. Step 2: Convert to fraction form
    18,292.59/25,236.11 = 12,313.89/x
  3. Step 3: Cross multiply
    18,292.59x = 25,236.11 × 12,313.89
  4. Step 4: Simplify right side
    18,292.59x = 310,754,713.35
  5. Step 5: Solve for x
    x = 310,754,713.35/18,292.59
  6. Step 6: Final answer
    x = 16,988.01

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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.