Home / 21,918.57-32,886.14-13,159.59

Finding the Fourth Proportional to 21,918.57, 32,886.14 and 13,159.59

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Solution

The fourth proportional to 21,918.57, 32,886.14 and 13,159.59 is: 19,744.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.57 : 32,886.14 = 13,159.59 : x
  2. Step 2: Convert to fraction form
    21,918.57/32,886.14 = 13,159.59/x
  3. Step 3: Cross multiply
    21,918.57x = 32,886.14 × 13,159.59
  4. Step 4: Simplify right side
    21,918.57x = 432,768,053.28
  5. Step 5: Solve for x
    x = 432,768,053.28/21,918.57
  6. Step 6: Final answer
    x = 19,744.36

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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.