Home / 21,215.19-31,835.04-11,359.98

Finding the Fourth Proportional to 21,215.19, 31,835.04 and 11,359.98

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Solution

The fourth proportional to 21,215.19, 31,835.04 and 11,359.98 is: 17,046.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215.19 : 31,835.04 = 11,359.98 : x
  2. Step 2: Convert to fraction form
    21,215.19/31,835.04 = 11,359.98/x
  3. Step 3: Cross multiply
    21,215.19x = 31,835.04 × 11,359.98
  4. Step 4: Simplify right side
    21,215.19x = 361,645,417.70
  5. Step 5: Solve for x
    x = 361,645,417.70/21,215.19
  6. Step 6: Final answer
    x = 17,046.53

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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.