Home / 21,063.36-31,601.52-15,222

Finding the Fourth Proportional to 21,063.36, 31,601.52 and 15,222

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Solution

The fourth proportional to 21,063.36, 31,601.52 and 15,222 is: 22,837.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,063.36 : 31,601.52 = 15,222 : x
  2. Step 2: Convert to fraction form
    21,063.36/31,601.52 = 15,222/x
  3. Step 3: Cross multiply
    21,063.36x = 31,601.52 × 15,222
  4. Step 4: Simplify right side
    21,063.36x = 481,038,337.44
  5. Step 5: Solve for x
    x = 481,038,337.44/21,063.36
  6. Step 6: Final answer
    x = 22,837.68

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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.