Home / 21,727.20-29,985.48-12,770.22

Finding the Fourth Proportional to 21,727.20, 29,985.48 and 12,770.22

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Solution

The fourth proportional to 21,727.20, 29,985.48 and 12,770.22 is: 17,624.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.20 : 29,985.48 = 12,770.22 : x
  2. Step 2: Convert to fraction form
    21,727.20/29,985.48 = 12,770.22/x
  3. Step 3: Cross multiply
    21,727.20x = 29,985.48 × 12,770.22
  4. Step 4: Simplify right side
    21,727.20x = 382,921,176.41
  5. Step 5: Solve for x
    x = 382,921,176.41/21,727.20
  6. Step 6: Final answer
    x = 17,624.05

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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.