Home / 21,089.26-29,103.17-12,707.38

Finding the Fourth Proportional to 21,089.26, 29,103.17 and 12,707.38

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Solution

The fourth proportional to 21,089.26, 29,103.17 and 12,707.38 is: 17,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,089.26 : 29,103.17 = 12,707.38 : x
  2. Step 2: Convert to fraction form
    21,089.26/29,103.17 = 12,707.38/x
  3. Step 3: Cross multiply
    21,089.26x = 29,103.17 × 12,707.38
  4. Step 4: Simplify right side
    21,089.26x = 369,825,040.39
  5. Step 5: Solve for x
    x = 369,825,040.39/21,089.26
  6. Step 6: Final answer
    x = 17,536.18

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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.