Home / 13,305.38-18,362.66-7,640.91

Finding the Fourth Proportional to 13,305.38, 18,362.66 and 7,640.91

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Solution

The fourth proportional to 13,305.38, 18,362.66 and 7,640.91 is: 10,545.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.38 : 18,362.66 = 7,640.91 : x
  2. Step 2: Convert to fraction form
    13,305.38/18,362.66 = 7,640.91/x
  3. Step 3: Cross multiply
    13,305.38x = 18,362.66 × 7,640.91
  4. Step 4: Simplify right side
    13,305.38x = 140,307,394.22
  5. Step 5: Solve for x
    x = 140,307,394.22/13,305.38
  6. Step 6: Final answer
    x = 10,545.17

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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.