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Finding the Fourth Proportional to 14,606.13, 20,156.45 and 7,891.76

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Solution

The fourth proportional to 14,606.13, 20,156.45 and 7,891.76 is: 10,890.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,606.13 : 20,156.45 = 7,891.76 : x
  2. Step 2: Convert to fraction form
    14,606.13/20,156.45 = 7,891.76/x
  3. Step 3: Cross multiply
    14,606.13x = 20,156.45 × 7,891.76
  4. Step 4: Simplify right side
    14,606.13x = 159,069,725.61
  5. Step 5: Solve for x
    x = 159,069,725.61/14,606.13
  6. Step 6: Final answer
    x = 10,890.61

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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.