Home / 22,419.36-30,937.62-12,990.96

Finding the Fourth Proportional to 22,419.36, 30,937.62 and 12,990.96

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Solution

The fourth proportional to 22,419.36, 30,937.62 and 12,990.96 is: 17,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,419.36 : 30,937.62 = 12,990.96 : x
  2. Step 2: Convert to fraction form
    22,419.36/30,937.62 = 12,990.96/x
  3. Step 3: Cross multiply
    22,419.36x = 30,937.62 × 12,990.96
  4. Step 4: Simplify right side
    22,419.36x = 401,909,383.92
  5. Step 5: Solve for x
    x = 401,909,383.92/22,419.36
  6. Step 6: Final answer
    x = 17,926.89

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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.