Home / 20,776.32-31,164.96-5,985.60

Finding the Fourth Proportional to 20,776.32, 31,164.96 and 5,985.60

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Solution

The fourth proportional to 20,776.32, 31,164.96 and 5,985.60 is: 8,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.32 : 31,164.96 = 5,985.60 : x
  2. Step 2: Convert to fraction form
    20,776.32/31,164.96 = 5,985.60/x
  3. Step 3: Cross multiply
    20,776.32x = 31,164.96 × 5,985.60
  4. Step 4: Simplify right side
    20,776.32x = 186,540,984.58
  5. Step 5: Solve for x
    x = 186,540,984.58/20,776.32
  6. Step 6: Final answer
    x = 8,978.54

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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.