Home / 18,738.59-28,099.64-9,971.42

Finding the Fourth Proportional to 18,738.59, 28,099.64 and 9,971.42

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Solution

The fourth proportional to 18,738.59, 28,099.64 and 9,971.42 is: 14,952.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,738.59 : 28,099.64 = 9,971.42 : x
  2. Step 2: Convert to fraction form
    18,738.59/28,099.64 = 9,971.42/x
  3. Step 3: Cross multiply
    18,738.59x = 28,099.64 × 9,971.42
  4. Step 4: Simplify right side
    18,738.59x = 280,193,196.72
  5. Step 5: Solve for x
    x = 280,193,196.72/18,738.59
  6. Step 6: Final answer
    x = 14,952.74

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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.