Home / 18,938.16-28,411.34-7,251.38

Finding the Fourth Proportional to 18,938.16, 28,411.34 and 7,251.38

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Solution

The fourth proportional to 18,938.16, 28,411.34 and 7,251.38 is: 10,878.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.16 : 28,411.34 = 7,251.38 : x
  2. Step 2: Convert to fraction form
    18,938.16/28,411.34 = 7,251.38/x
  3. Step 3: Cross multiply
    18,938.16x = 28,411.34 × 7,251.38
  4. Step 4: Simplify right side
    18,938.16x = 206,021,244.34
  5. Step 5: Solve for x
    x = 206,021,244.34/18,938.16
  6. Step 6: Final answer
    x = 10,878.63

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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.