Home / 20,747.32-31,110.74-9,055.48

Finding the Fourth Proportional to 20,747.32, 31,110.74 and 9,055.48

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Solution

The fourth proportional to 20,747.32, 31,110.74 and 9,055.48 is: 13,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.32 : 31,110.74 = 9,055.48 : x
  2. Step 2: Convert to fraction form
    20,747.32/31,110.74 = 9,055.48/x
  3. Step 3: Cross multiply
    20,747.32x = 31,110.74 × 9,055.48
  4. Step 4: Simplify right side
    20,747.32x = 281,722,683.86
  5. Step 5: Solve for x
    x = 281,722,683.86/20,747.32
  6. Step 6: Final answer
    x = 13,578.75

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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.