Home / 21,149.42-29,184.93-11,717.30

Finding the Fourth Proportional to 21,149.42, 29,184.93 and 11,717.30

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Solution

The fourth proportional to 21,149.42, 29,184.93 and 11,717.30 is: 16,169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.42 : 29,184.93 = 11,717.30 : x
  2. Step 2: Convert to fraction form
    21,149.42/29,184.93 = 11,717.30/x
  3. Step 3: Cross multiply
    21,149.42x = 29,184.93 × 11,717.30
  4. Step 4: Simplify right side
    21,149.42x = 341,968,580.29
  5. Step 5: Solve for x
    x = 341,968,580.29/21,149.42
  6. Step 6: Final answer
    x = 16,169.17

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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.