Home / 19,428.07-29,142.11-5,391.64

Finding the Fourth Proportional to 19,428.07, 29,142.11 and 5,391.64

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Solution

The fourth proportional to 19,428.07, 29,142.11 and 5,391.64 is: 8,087.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.07 : 29,142.11 = 5,391.64 : x
  2. Step 2: Convert to fraction form
    19,428.07/29,142.11 = 5,391.64/x
  3. Step 3: Cross multiply
    19,428.07x = 29,142.11 × 5,391.64
  4. Step 4: Simplify right side
    19,428.07x = 157,123,706.58
  5. Step 5: Solve for x
    x = 157,123,706.58/19,428.07
  6. Step 6: Final answer
    x = 8,087.46

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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.