Home / 21,661.14-29,881.29-14,120.10

Finding the Fourth Proportional to 21,661.14, 29,881.29 and 14,120.10

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Solution

The fourth proportional to 21,661.14, 29,881.29 and 14,120.10 is: 19,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.14 : 29,881.29 = 14,120.10 : x
  2. Step 2: Convert to fraction form
    21,661.14/29,881.29 = 14,120.10/x
  3. Step 3: Cross multiply
    21,661.14x = 29,881.29 × 14,120.10
  4. Step 4: Simplify right side
    21,661.14x = 421,926,802.93
  5. Step 5: Solve for x
    x = 421,926,802.93/21,661.14
  6. Step 6: Final answer
    x = 19,478.51

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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.