Home / 20,411.30-30,588.43-11,031.09

Finding the Fourth Proportional to 20,411.30, 30,588.43 and 11,031.09

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Solution

The fourth proportional to 20,411.30, 30,588.43 and 11,031.09 is: 16,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.30 : 30,588.43 = 11,031.09 : x
  2. Step 2: Convert to fraction form
    20,411.30/30,588.43 = 11,031.09/x
  3. Step 3: Cross multiply
    20,411.30x = 30,588.43 × 11,031.09
  4. Step 4: Simplify right side
    20,411.30x = 337,423,724.29
  5. Step 5: Solve for x
    x = 337,423,724.29/20,411.30
  6. Step 6: Final answer
    x = 16,531.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.