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Finding the Fourth Proportional to 18,109.46, 24,983.78 and 11,299.47

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Solution

The fourth proportional to 18,109.46, 24,983.78 and 11,299.47 is: 15,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.46 : 24,983.78 = 11,299.47 : x
  2. Step 2: Convert to fraction form
    18,109.46/24,983.78 = 11,299.47/x
  3. Step 3: Cross multiply
    18,109.46x = 24,983.78 × 11,299.47
  4. Step 4: Simplify right side
    18,109.46x = 282,303,322.41
  5. Step 5: Solve for x
    x = 282,303,322.41/18,109.46
  6. Step 6: Final answer
    x = 15,588.72

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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.