Home / 20,374.76-30,564.43-18,281.90

Finding the Fourth Proportional to 20,374.76, 30,564.43 and 18,281.90

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Solution

The fourth proportional to 20,374.76, 30,564.43 and 18,281.90 is: 27,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.76 : 30,564.43 = 18,281.90 : x
  2. Step 2: Convert to fraction form
    20,374.76/30,564.43 = 18,281.90/x
  3. Step 3: Cross multiply
    20,374.76x = 30,564.43 × 18,281.90
  4. Step 4: Simplify right side
    20,374.76x = 558,775,883.52
  5. Step 5: Solve for x
    x = 558,775,883.52/20,374.76
  6. Step 6: Final answer
    x = 27,424.90

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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.