Home / 18,738.65-28,099.74-9,971.48

Finding the Fourth Proportional to 18,738.65, 28,099.74 and 9,971.48

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Solution

The fourth proportional to 18,738.65, 28,099.74 and 9,971.48 is: 14,952.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.65 : 28,099.74 = 9,971.48 : x
  2. Step 2: Convert to fraction form
    18,738.65/28,099.74 = 9,971.48/x
  3. Step 3: Cross multiply
    18,738.65x = 28,099.74 × 9,971.48
  4. Step 4: Simplify right side
    18,738.65x = 280,195,995.42
  5. Step 5: Solve for x
    x = 280,195,995.42/18,738.65
  6. Step 6: Final answer
    x = 14,952.84

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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.