Home / 21,031.26-29,061.63-20,006.21

Finding the Fourth Proportional to 21,031.26, 29,061.63 and 20,006.21

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Solution

The fourth proportional to 21,031.26, 29,061.63 and 20,006.21 is: 27,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.26 : 29,061.63 = 20,006.21 : x
  2. Step 2: Convert to fraction form
    21,031.26/29,061.63 = 20,006.21/x
  3. Step 3: Cross multiply
    21,031.26x = 29,061.63 × 20,006.21
  4. Step 4: Simplify right side
    21,031.26x = 581,412,927.41
  5. Step 5: Solve for x
    x = 581,412,927.41/21,031.26
  6. Step 6: Final answer
    x = 27,645.18

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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.