Home / 21,248.76-31,889.52-11,396.28

Finding the Fourth Proportional to 21,248.76, 31,889.52 and 11,396.28

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Solution

The fourth proportional to 21,248.76, 31,889.52 and 11,396.28 is: 17,103.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.76 : 31,889.52 = 11,396.28 : x
  2. Step 2: Convert to fraction form
    21,248.76/31,889.52 = 11,396.28/x
  3. Step 3: Cross multiply
    21,248.76x = 31,889.52 × 11,396.28
  4. Step 4: Simplify right side
    21,248.76x = 363,421,898.99
  5. Step 5: Solve for x
    x = 363,421,898.99/21,248.76
  6. Step 6: Final answer
    x = 17,103.21

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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.