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Finding the Fourth Proportional to 14,458.05, 19,947.42 and 8,491.19

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Solution

The fourth proportional to 14,458.05, 19,947.42 and 8,491.19 is: 11,715.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.05 : 19,947.42 = 8,491.19 : x
  2. Step 2: Convert to fraction form
    14,458.05/19,947.42 = 8,491.19/x
  3. Step 3: Cross multiply
    14,458.05x = 19,947.42 × 8,491.19
  4. Step 4: Simplify right side
    14,458.05x = 169,377,233.49
  5. Step 5: Solve for x
    x = 169,377,233.49/14,458.05
  6. Step 6: Final answer
    x = 11,715.08

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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.