Home / 13,869.18-19,141.25-7,902.99

Finding the Fourth Proportional to 13,869.18, 19,141.25 and 7,902.99

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Solution

The fourth proportional to 13,869.18, 19,141.25 and 7,902.99 is: 10,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.18 : 19,141.25 = 7,902.99 : x
  2. Step 2: Convert to fraction form
    13,869.18/19,141.25 = 7,902.99/x
  3. Step 3: Cross multiply
    13,869.18x = 19,141.25 × 7,902.99
  4. Step 4: Simplify right side
    13,869.18x = 151,273,067.82
  5. Step 5: Solve for x
    x = 151,273,067.82/13,869.18
  6. Step 6: Final answer
    x = 10,907.14

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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.