Home / 21,079.14-29,089.80-11,648.31

Finding the Fourth Proportional to 21,079.14, 29,089.80 and 11,648.31

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Solution

The fourth proportional to 21,079.14, 29,089.80 and 11,648.31 is: 16,074.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.14 : 29,089.80 = 11,648.31 : x
  2. Step 2: Convert to fraction form
    21,079.14/29,089.80 = 11,648.31/x
  3. Step 3: Cross multiply
    21,079.14x = 29,089.80 × 11,648.31
  4. Step 4: Simplify right side
    21,079.14x = 338,847,008.24
  5. Step 5: Solve for x
    x = 338,847,008.24/21,079.14
  6. Step 6: Final answer
    x = 16,074.99

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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.