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Finding the Fourth Proportional to 14,920.92, 20,588.18 and 8,460.58

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Solution

The fourth proportional to 14,920.92, 20,588.18 and 8,460.58 is: 11,674.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.92 : 20,588.18 = 8,460.58 : x
  2. Step 2: Convert to fraction form
    14,920.92/20,588.18 = 8,460.58/x
  3. Step 3: Cross multiply
    14,920.92x = 20,588.18 × 8,460.58
  4. Step 4: Simplify right side
    14,920.92x = 174,187,943.94
  5. Step 5: Solve for x
    x = 174,187,943.94/14,920.92
  6. Step 6: Final answer
    x = 11,674.08

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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.