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Finding the Fourth Proportional to 18,600.84, 25,665.12 and 10,645.56

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Solution

The fourth proportional to 18,600.84, 25,665.12 and 10,645.56 is: 14,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.84 : 25,665.12 = 10,645.56 : x
  2. Step 2: Convert to fraction form
    18,600.84/25,665.12 = 10,645.56/x
  3. Step 3: Cross multiply
    18,600.84x = 25,665.12 × 10,645.56
  4. Step 4: Simplify right side
    18,600.84x = 273,219,574.87
  5. Step 5: Solve for x
    x = 273,219,574.87/18,600.84
  6. Step 6: Final answer
    x = 14,688.56

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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.