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Finding the Fourth Proportional to 18,597.45, 27,868.48 and 10,279.86

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Solution

The fourth proportional to 18,597.45, 27,868.48 and 10,279.86 is: 15,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.45 : 27,868.48 = 10,279.86 : x
  2. Step 2: Convert to fraction form
    18,597.45/27,868.48 = 10,279.86/x
  3. Step 3: Cross multiply
    18,597.45x = 27,868.48 × 10,279.86
  4. Step 4: Simplify right side
    18,597.45x = 286,484,072.81
  5. Step 5: Solve for x
    x = 286,484,072.81/18,597.45
  6. Step 6: Final answer
    x = 15,404.48

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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.