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Finding the Fourth Proportional to 10,890.77, 15,026.63 and 6,910.43

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Solution

The fourth proportional to 10,890.77, 15,026.63 and 6,910.43 is: 9,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.77 : 15,026.63 = 6,910.43 : x
  2. Step 2: Convert to fraction form
    10,890.77/15,026.63 = 6,910.43/x
  3. Step 3: Cross multiply
    10,890.77x = 15,026.63 × 6,910.43
  4. Step 4: Simplify right side
    10,890.77x = 103,840,365.07
  5. Step 5: Solve for x
    x = 103,840,365.07/10,890.77
  6. Step 6: Final answer
    x = 9,534.72

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