Home / 20,776.62-31,157.67-5,981.58

Finding the Fourth Proportional to 20,776.62, 31,157.67 and 5,981.58

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Solution

The fourth proportional to 20,776.62, 31,157.67 and 5,981.58 is: 8,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.62 : 31,157.67 = 5,981.58 : x
  2. Step 2: Convert to fraction form
    20,776.62/31,157.67 = 5,981.58/x
  3. Step 3: Cross multiply
    20,776.62x = 31,157.67 × 5,981.58
  4. Step 4: Simplify right side
    20,776.62x = 186,372,095.72
  5. Step 5: Solve for x
    x = 186,372,095.72/20,776.62
  6. Step 6: Final answer
    x = 8,970.28

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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.