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Finding the Fourth Proportional to 11,290, 16,937.70 and 7,156.56

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Solution

The fourth proportional to 11,290, 16,937.70 and 7,156.56 is: 10,736.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290 : 16,937.70 = 7,156.56 : x
  2. Step 2: Convert to fraction form
    11,290/16,937.70 = 7,156.56/x
  3. Step 3: Cross multiply
    11,290x = 16,937.70 × 7,156.56
  4. Step 4: Simplify right side
    11,290x = 121,215,666.31
  5. Step 5: Solve for x
    x = 121,215,666.31/11,290
  6. Step 6: Final answer
    x = 10,736.55

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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.