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Finding the Fourth Proportional to 11,937.65, 18,018.65 and 11,937.65

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Solution

The fourth proportional to 11,937.65, 18,018.65 and 11,937.65 is: 18,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,937.65 : 18,018.65 = 11,937.65 : x
  2. Step 2: Convert to fraction form
    11,937.65/18,018.65 = 11,937.65/x
  3. Step 3: Cross multiply
    11,937.65x = 18,018.65 × 11,937.65
  4. Step 4: Simplify right side
    11,937.65x = 215,100,276.92
  5. Step 5: Solve for x
    x = 215,100,276.92/11,937.65
  6. Step 6: Final answer
    x = 18,018.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.