Home / 23,325.60-34,988.40-20,919.90

Finding the Fourth Proportional to 23,325.60, 34,988.40 and 20,919.90

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Solution

The fourth proportional to 23,325.60, 34,988.40 and 20,919.90 is: 31,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,325.60 : 34,988.40 = 20,919.90 : x
  2. Step 2: Convert to fraction form
    23,325.60/34,988.40 = 20,919.90/x
  3. Step 3: Cross multiply
    23,325.60x = 34,988.40 × 20,919.90
  4. Step 4: Simplify right side
    23,325.60x = 731,953,829.16
  5. Step 5: Solve for x
    x = 731,953,829.16/23,325.60
  6. Step 6: Final answer
    x = 31,379.85

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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.