Home / 21,294.08-31,836-18,043.52

Finding the Fourth Proportional to 21,294.08, 31,836 and 18,043.52

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Solution

The fourth proportional to 21,294.08, 31,836 and 18,043.52 is: 26,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.08 : 31,836 = 18,043.52 : x
  2. Step 2: Convert to fraction form
    21,294.08/31,836 = 18,043.52/x
  3. Step 3: Cross multiply
    21,294.08x = 31,836 × 18,043.52
  4. Step 4: Simplify right side
    21,294.08x = 574,433,502.72
  5. Step 5: Solve for x
    x = 574,433,502.72/21,294.08
  6. Step 6: Final answer
    x = 26,976.21

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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.