Home / 21,235.30-29,292.60-13,165.27

Finding the Fourth Proportional to 21,235.30, 29,292.60 and 13,165.27

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Solution

The fourth proportional to 21,235.30, 29,292.60 and 13,165.27 is: 18,160.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.30 : 29,292.60 = 13,165.27 : x
  2. Step 2: Convert to fraction form
    21,235.30/29,292.60 = 13,165.27/x
  3. Step 3: Cross multiply
    21,235.30x = 29,292.60 × 13,165.27
  4. Step 4: Simplify right side
    21,235.30x = 385,644,964.14
  5. Step 5: Solve for x
    x = 385,644,964.14/21,235.30
  6. Step 6: Final answer
    x = 18,160.56

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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.