Home / 21,145.90-29,177.63-12,067.11

Finding the Fourth Proportional to 21,145.90, 29,177.63 and 12,067.11

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Solution

The fourth proportional to 21,145.90, 29,177.63 and 12,067.11 is: 16,650.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,145.90 : 29,177.63 = 12,067.11 : x
  2. Step 2: Convert to fraction form
    21,145.90/29,177.63 = 12,067.11/x
  3. Step 3: Cross multiply
    21,145.90x = 29,177.63 × 12,067.11
  4. Step 4: Simplify right side
    21,145.90x = 352,089,763.10
  5. Step 5: Solve for x
    x = 352,089,763.10/21,145.90
  6. Step 6: Final answer
    x = 16,650.50

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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.