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Finding the Fourth Proportional to 8,661.51, 11,927.70 and 7,526.66

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Solution

The fourth proportional to 8,661.51, 11,927.70 and 7,526.66 is: 10,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.51 : 11,927.70 = 7,526.66 : x
  2. Step 2: Convert to fraction form
    8,661.51/11,927.70 = 7,526.66/x
  3. Step 3: Cross multiply
    8,661.51x = 11,927.70 × 7,526.66
  4. Step 4: Simplify right side
    8,661.51x = 89,775,682.84
  5. Step 5: Solve for x
    x = 89,775,682.84/8,661.51
  6. Step 6: Final answer
    x = 10,364.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.