Home / 21,310.34-31,926.56-17,979.95

Finding the Fourth Proportional to 21,310.34, 31,926.56 and 17,979.95

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Solution

The fourth proportional to 21,310.34, 31,926.56 and 17,979.95 is: 26,937.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.34 : 31,926.56 = 17,979.95 : x
  2. Step 2: Convert to fraction form
    21,310.34/31,926.56 = 17,979.95/x
  3. Step 3: Cross multiply
    21,310.34x = 31,926.56 × 17,979.95
  4. Step 4: Simplify right side
    21,310.34x = 574,037,852.60
  5. Step 5: Solve for x
    x = 574,037,852.60/21,310.34
  6. Step 6: Final answer
    x = 26,937.06

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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.