Home / 13,869.82-19,138.13-7,901.60

Finding the Fourth Proportional to 13,869.82, 19,138.13 and 7,901.60

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Solution

The fourth proportional to 13,869.82, 19,138.13 and 7,901.60 is: 10,902.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.82 : 19,138.13 = 7,901.60 : x
  2. Step 2: Convert to fraction form
    13,869.82/19,138.13 = 7,901.60/x
  3. Step 3: Cross multiply
    13,869.82x = 19,138.13 × 7,901.60
  4. Step 4: Simplify right side
    13,869.82x = 151,221,848.01
  5. Step 5: Solve for x
    x = 151,221,848.01/13,869.82
  6. Step 6: Final answer
    x = 10,902.94

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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.