Home / 21,284.22-29,159.52-20,486.13

Finding the Fourth Proportional to 21,284.22, 29,159.52 and 20,486.13

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Solution

The fourth proportional to 21,284.22, 29,159.52 and 20,486.13 is: 28,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.22 : 29,159.52 = 20,486.13 : x
  2. Step 2: Convert to fraction form
    21,284.22/29,159.52 = 20,486.13/x
  3. Step 3: Cross multiply
    21,284.22x = 29,159.52 × 20,486.13
  4. Step 4: Simplify right side
    21,284.22x = 597,365,629.91
  5. Step 5: Solve for x
    x = 597,365,629.91/21,284.22
  6. Step 6: Final answer
    x = 28,066.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.