Home / 9,519.47-13,143.80-7,641.38

Finding the Fourth Proportional to 9,519.47, 13,143.80 and 7,641.38

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Solution

The fourth proportional to 9,519.47, 13,143.80 and 7,641.38 is: 10,550.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,519.47 : 13,143.80 = 7,641.38 : x
  2. Step 2: Convert to fraction form
    9,519.47/13,143.80 = 7,641.38/x
  3. Step 3: Cross multiply
    9,519.47x = 13,143.80 × 7,641.38
  4. Step 4: Simplify right side
    9,519.47x = 100,436,732.24
  5. Step 5: Solve for x
    x = 100,436,732.24/9,519.47
  6. Step 6: Final answer
    x = 10,550.67

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Half scale
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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.