Home / 21,164.61-29,197.77-13,609.56

Finding the Fourth Proportional to 21,164.61, 29,197.77 and 13,609.56

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Solution

The fourth proportional to 21,164.61, 29,197.77 and 13,609.56 is: 18,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,164.61 : 29,197.77 = 13,609.56 : x
  2. Step 2: Convert to fraction form
    21,164.61/29,197.77 = 13,609.56/x
  3. Step 3: Cross multiply
    21,164.61x = 29,197.77 × 13,609.56
  4. Step 4: Simplify right side
    21,164.61x = 397,368,802.68
  5. Step 5: Solve for x
    x = 397,368,802.68/21,164.61
  6. Step 6: Final answer
    x = 18,775.15

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1.5x scale

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.