Home / 21,551.48-29,731.62-13,163

Finding the Fourth Proportional to 21,551.48, 29,731.62 and 13,163

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Solution

The fourth proportional to 21,551.48, 29,731.62 and 13,163 is: 18,159.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.48 : 29,731.62 = 13,163 : x
  2. Step 2: Convert to fraction form
    21,551.48/29,731.62 = 13,163/x
  3. Step 3: Cross multiply
    21,551.48x = 29,731.62 × 13,163
  4. Step 4: Simplify right side
    21,551.48x = 391,357,314.06
  5. Step 5: Solve for x
    x = 391,357,314.06/21,551.48
  6. Step 6: Final answer
    x = 18,159.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.