Home / 18,847.12-28,246.08-7,740.64

Finding the Fourth Proportional to 18,847.12, 28,246.08 and 7,740.64

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Solution

The fourth proportional to 18,847.12, 28,246.08 and 7,740.64 is: 11,600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,847.12 : 28,246.08 = 7,740.64 : x
  2. Step 2: Convert to fraction form
    18,847.12/28,246.08 = 7,740.64/x
  3. Step 3: Cross multiply
    18,847.12x = 28,246.08 × 7,740.64
  4. Step 4: Simplify right side
    18,847.12x = 218,642,736.69
  5. Step 5: Solve for x
    x = 218,642,736.69/18,847.12
  6. Step 6: Final answer
    x = 11,600.86

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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.