Home / 21,192.48-31,715.13-13,183.96

Finding the Fourth Proportional to 21,192.48, 31,715.13 and 13,183.96

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Solution

The fourth proportional to 21,192.48, 31,715.13 and 13,183.96 is: 19,730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.48 : 31,715.13 = 13,183.96 : x
  2. Step 2: Convert to fraction form
    21,192.48/31,715.13 = 13,183.96/x
  3. Step 3: Cross multiply
    21,192.48x = 31,715.13 × 13,183.96
  4. Step 4: Simplify right side
    21,192.48x = 418,130,926.03
  5. Step 5: Solve for x
    x = 418,130,926.03/21,192.48
  6. Step 6: Final answer
    x = 19,730.16

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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.