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Finding the Fourth Proportional to 11,290.16, 16,938.48 and 7,389.74

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Solution

The fourth proportional to 11,290.16, 16,938.48 and 7,389.74 is: 11,086.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.16 : 16,938.48 = 7,389.74 : x
  2. Step 2: Convert to fraction form
    11,290.16/16,938.48 = 7,389.74/x
  3. Step 3: Cross multiply
    11,290.16x = 16,938.48 × 7,389.74
  4. Step 4: Simplify right side
    11,290.16x = 125,170,963.20
  5. Step 5: Solve for x
    x = 125,170,963.20/11,290.16
  6. Step 6: Final answer
    x = 11,086.73

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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.