Home / 21,791.70-30,055.05-13,835.88

Finding the Fourth Proportional to 21,791.70, 30,055.05 and 13,835.88

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Solution

The fourth proportional to 21,791.70, 30,055.05 and 13,835.88 is: 19,082.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.70 : 30,055.05 = 13,835.88 : x
  2. Step 2: Convert to fraction form
    21,791.70/30,055.05 = 13,835.88/x
  3. Step 3: Cross multiply
    21,791.70x = 30,055.05 × 13,835.88
  4. Step 4: Simplify right side
    21,791.70x = 415,838,065.19
  5. Step 5: Solve for x
    x = 415,838,065.19/21,791.70
  6. Step 6: Final answer
    x = 19,082.41

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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.