Home / 22,211.13-30,646.31-13,261.53

Finding the Fourth Proportional to 22,211.13, 30,646.31 and 13,261.53

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Solution

The fourth proportional to 22,211.13, 30,646.31 and 13,261.53 is: 18,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.13 : 30,646.31 = 13,261.53 : x
  2. Step 2: Convert to fraction form
    22,211.13/30,646.31 = 13,261.53/x
  3. Step 3: Cross multiply
    22,211.13x = 30,646.31 × 13,261.53
  4. Step 4: Simplify right side
    22,211.13x = 406,416,893.15
  5. Step 5: Solve for x
    x = 406,416,893.15/22,211.13
  6. Step 6: Final answer
    x = 18,297.89

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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.