Home / 20,118.61-27,763.16-11,165.88

Finding the Fourth Proportional to 20,118.61, 27,763.16 and 11,165.88

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Solution

The fourth proportional to 20,118.61, 27,763.16 and 11,165.88 is: 15,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.61 : 27,763.16 = 11,165.88 : x
  2. Step 2: Convert to fraction form
    20,118.61/27,763.16 = 11,165.88/x
  3. Step 3: Cross multiply
    20,118.61x = 27,763.16 × 11,165.88
  4. Step 4: Simplify right side
    20,118.61x = 310,000,161.26
  5. Step 5: Solve for x
    x = 310,000,161.26/20,118.61
  6. Step 6: Final answer
    x = 15,408.63

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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.