Home / 12,368.92-18,513.24-9,081.28

Finding the Fourth Proportional to 12,368.92, 18,513.24 and 9,081.28

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Solution

The fourth proportional to 12,368.92, 18,513.24 and 9,081.28 is: 13,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.92 : 18,513.24 = 9,081.28 : x
  2. Step 2: Convert to fraction form
    12,368.92/18,513.24 = 9,081.28/x
  3. Step 3: Cross multiply
    12,368.92x = 18,513.24 × 9,081.28
  4. Step 4: Simplify right side
    12,368.92x = 168,123,916.15
  5. Step 5: Solve for x
    x = 168,123,916.15/12,368.92
  6. Step 6: Final answer
    x = 13,592.45

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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.