Home / 21,106.07-29,097.85-13,539.24

Finding the Fourth Proportional to 21,106.07, 29,097.85 and 13,539.24

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Solution

The fourth proportional to 21,106.07, 29,097.85 and 13,539.24 is: 18,665.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.07 : 29,097.85 = 13,539.24 : x
  2. Step 2: Convert to fraction form
    21,106.07/29,097.85 = 13,539.24/x
  3. Step 3: Cross multiply
    21,106.07x = 29,097.85 × 13,539.24
  4. Step 4: Simplify right side
    21,106.07x = 393,962,668.13
  5. Step 5: Solve for x
    x = 393,962,668.13/21,106.07
  6. Step 6: Final answer
    x = 18,665.85

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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.