Home / 20,438.50-30,647.72-9,197.32

Finding the Fourth Proportional to 20,438.50, 30,647.72 and 9,197.32

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Solution

The fourth proportional to 20,438.50, 30,647.72 and 9,197.32 is: 13,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.50 : 30,647.72 = 9,197.32 : x
  2. Step 2: Convert to fraction form
    20,438.50/30,647.72 = 9,197.32/x
  3. Step 3: Cross multiply
    20,438.50x = 30,647.72 × 9,197.32
  4. Step 4: Simplify right side
    20,438.50x = 281,876,888.11
  5. Step 5: Solve for x
    x = 281,876,888.11/20,438.50
  6. Step 6: Final answer
    x = 13,791.47

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1.5x scale

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.