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Finding the Fourth Proportional to 18,697.77, 25,805.70 and 12,323.39

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Solution

The fourth proportional to 18,697.77, 25,805.70 and 12,323.39 is: 17,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.77 : 25,805.70 = 12,323.39 : x
  2. Step 2: Convert to fraction form
    18,697.77/25,805.70 = 12,323.39/x
  3. Step 3: Cross multiply
    18,697.77x = 25,805.70 × 12,323.39
  4. Step 4: Simplify right side
    18,697.77x = 318,013,576.29
  5. Step 5: Solve for x
    x = 318,013,576.29/18,697.77
  6. Step 6: Final answer
    x = 17,008.10

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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.