Home / 13,866.80-19,139.63-7,902.01

Finding the Fourth Proportional to 13,866.80, 19,139.63 and 7,902.01

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Solution

The fourth proportional to 13,866.80, 19,139.63 and 7,902.01 is: 10,906.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.80 : 19,139.63 = 7,902.01 : x
  2. Step 2: Convert to fraction form
    13,866.80/19,139.63 = 7,902.01/x
  3. Step 3: Cross multiply
    13,866.80x = 19,139.63 × 7,902.01
  4. Step 4: Simplify right side
    13,866.80x = 151,241,460.30
  5. Step 5: Solve for x
    x = 151,241,460.30/13,866.80
  6. Step 6: Final answer
    x = 10,906.73

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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.