Home / 21,089.64-29,104.29-11,658.81

Finding the Fourth Proportional to 21,089.64, 29,104.29 and 11,658.81

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Solution

The fourth proportional to 21,089.64, 29,104.29 and 11,658.81 is: 16,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.64 : 29,104.29 = 11,658.81 : x
  2. Step 2: Convert to fraction form
    21,089.64/29,104.29 = 11,658.81/x
  3. Step 3: Cross multiply
    21,089.64x = 29,104.29 × 11,658.81
  4. Step 4: Simplify right side
    21,089.64x = 339,321,387.29
  5. Step 5: Solve for x
    x = 339,321,387.29/21,089.64
  6. Step 6: Final answer
    x = 16,089.48

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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.