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Finding the Fourth Proportional to 18,449.80, 25,459.95 and 10,898.56

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Solution

The fourth proportional to 18,449.80, 25,459.95 and 10,898.56 is: 15,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.80 : 25,459.95 = 10,898.56 : x
  2. Step 2: Convert to fraction form
    18,449.80/25,459.95 = 10,898.56/x
  3. Step 3: Cross multiply
    18,449.80x = 25,459.95 × 10,898.56
  4. Step 4: Simplify right side
    18,449.80x = 277,476,665.37
  5. Step 5: Solve for x
    x = 277,476,665.37/18,449.80
  6. Step 6: Final answer
    x = 15,039.55

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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.