Home / 21,125.64-31,731.66-17,844.60

Finding the Fourth Proportional to 21,125.64, 31,731.66 and 17,844.60

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Solution

The fourth proportional to 21,125.64, 31,731.66 and 17,844.60 is: 26,803.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.64 : 31,731.66 = 17,844.60 : x
  2. Step 2: Convert to fraction form
    21,125.64/31,731.66 = 17,844.60/x
  3. Step 3: Cross multiply
    21,125.64x = 31,731.66 × 17,844.60
  4. Step 4: Simplify right side
    21,125.64x = 566,238,780.04
  5. Step 5: Solve for x
    x = 566,238,780.04/21,125.64
  6. Step 6: Final answer
    x = 26,803.39

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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.