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Finding the Fourth Proportional to 18,299.82, 25,253.75 and 9,916.32

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Solution

The fourth proportional to 18,299.82, 25,253.75 and 9,916.32 is: 13,684.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.82 : 25,253.75 = 9,916.32 : x
  2. Step 2: Convert to fraction form
    18,299.82/25,253.75 = 9,916.32/x
  3. Step 3: Cross multiply
    18,299.82x = 25,253.75 × 9,916.32
  4. Step 4: Simplify right side
    18,299.82x = 250,424,290.99
  5. Step 5: Solve for x
    x = 250,424,290.99/18,299.82
  6. Step 6: Final answer
    x = 13,684.52

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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.