Home / 21,296.08-31,839-18,045.52

Finding the Fourth Proportional to 21,296.08, 31,839 and 18,045.52

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Solution

The fourth proportional to 21,296.08, 31,839 and 18,045.52 is: 26,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,296.08 : 31,839 = 18,045.52 : x
  2. Step 2: Convert to fraction form
    21,296.08/31,839 = 18,045.52/x
  3. Step 3: Cross multiply
    21,296.08x = 31,839 × 18,045.52
  4. Step 4: Simplify right side
    21,296.08x = 574,551,311.28
  5. Step 5: Solve for x
    x = 574,551,311.28/21,296.08
  6. Step 6: Final answer
    x = 26,979.21

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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.