Home / 18,728.70-28,057.41-9,967.74

Finding the Fourth Proportional to 18,728.70, 28,057.41 and 9,967.74

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Solution

The fourth proportional to 18,728.70, 28,057.41 and 9,967.74 is: 14,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.70 : 28,057.41 = 9,967.74 : x
  2. Step 2: Convert to fraction form
    18,728.70/28,057.41 = 9,967.74/x
  3. Step 3: Cross multiply
    18,728.70x = 28,057.41 × 9,967.74
  4. Step 4: Simplify right side
    18,728.70x = 279,668,967.95
  5. Step 5: Solve for x
    x = 279,668,967.95/18,728.70
  6. Step 6: Final answer
    x = 14,932.64

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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.