Home / 21,209.44-31,816.08-8,726.56

Finding the Fourth Proportional to 21,209.44, 31,816.08 and 8,726.56

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Solution

The fourth proportional to 21,209.44, 31,816.08 and 8,726.56 is: 13,090.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.44 : 31,816.08 = 8,726.56 : x
  2. Step 2: Convert to fraction form
    21,209.44/31,816.08 = 8,726.56/x
  3. Step 3: Cross multiply
    21,209.44x = 31,816.08 × 8,726.56
  4. Step 4: Simplify right side
    21,209.44x = 277,644,931.08
  5. Step 5: Solve for x
    x = 277,644,931.08/21,209.44
  6. Step 6: Final answer
    x = 13,090.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.