Home / 20,701.22-30,956.45-15,374.45

Finding the Fourth Proportional to 20,701.22, 30,956.45 and 15,374.45

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Solution

The fourth proportional to 20,701.22, 30,956.45 and 15,374.45 is: 22,990.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.22 : 30,956.45 = 15,374.45 : x
  2. Step 2: Convert to fraction form
    20,701.22/30,956.45 = 15,374.45/x
  3. Step 3: Cross multiply
    20,701.22x = 30,956.45 × 15,374.45
  4. Step 4: Simplify right side
    20,701.22x = 475,938,393.22
  5. Step 5: Solve for x
    x = 475,938,393.22/20,701.22
  6. Step 6: Final answer
    x = 22,990.84

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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.