Home / 21,147.51-29,184.08-11,716.59

Finding the Fourth Proportional to 21,147.51, 29,184.08 and 11,716.59

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Solution

The fourth proportional to 21,147.51, 29,184.08 and 11,716.59 is: 16,169.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.51 : 29,184.08 = 11,716.59 : x
  2. Step 2: Convert to fraction form
    21,147.51/29,184.08 = 11,716.59/x
  3. Step 3: Cross multiply
    21,147.51x = 29,184.08 × 11,716.59
  4. Step 4: Simplify right side
    21,147.51x = 341,937,841.30
  5. Step 5: Solve for x
    x = 341,937,841.30/21,147.51
  6. Step 6: Final answer
    x = 16,169.18

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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.