Home / 19,605.19-29,407.78-7,122.89

Finding the Fourth Proportional to 19,605.19, 29,407.78 and 7,122.89

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Solution

The fourth proportional to 19,605.19, 29,407.78 and 7,122.89 is: 10,684.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.19 : 29,407.78 = 7,122.89 : x
  2. Step 2: Convert to fraction form
    19,605.19/29,407.78 = 7,122.89/x
  3. Step 3: Cross multiply
    19,605.19x = 29,407.78 × 7,122.89
  4. Step 4: Simplify right side
    19,605.19x = 209,468,235.05
  5. Step 5: Solve for x
    x = 209,468,235.05/19,605.19
  6. Step 6: Final answer
    x = 10,684.33

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Similar ratio
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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.