Home / 28,086.96-38,775.60-20,525.76

Finding the Fourth Proportional to 28,086.96, 38,775.60 and 20,525.76

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Solution

The fourth proportional to 28,086.96, 38,775.60 and 20,525.76 is: 28,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.96 : 38,775.60 = 20,525.76 : x
  2. Step 2: Convert to fraction form
    28,086.96/38,775.60 = 20,525.76/x
  3. Step 3: Cross multiply
    28,086.96x = 38,775.60 × 20,525.76
  4. Step 4: Simplify right side
    28,086.96x = 795,898,659.46
  5. Step 5: Solve for x
    x = 795,898,659.46/28,086.96
  6. Step 6: Final answer
    x = 28,336.95

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Half scale
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Double scale
Find fourth proportional to 28,087.96, 38,776.98 and 20,526.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.