Home / 18,923.46-28,375.47-10,165.74

Finding the Fourth Proportional to 18,923.46, 28,375.47 and 10,165.74

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Solution

The fourth proportional to 18,923.46, 28,375.47 and 10,165.74 is: 15,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.46 : 28,375.47 = 10,165.74 : x
  2. Step 2: Convert to fraction form
    18,923.46/28,375.47 = 10,165.74/x
  3. Step 3: Cross multiply
    18,923.46x = 28,375.47 × 10,165.74
  4. Step 4: Simplify right side
    18,923.46x = 288,457,650.40
  5. Step 5: Solve for x
    x = 288,457,650.40/18,923.46
  6. Step 6: Final answer
    x = 15,243.39

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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.