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Finding the Fourth Proportional to 14,772.66, 20,386.44 and 8,807.76

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Solution

The fourth proportional to 14,772.66, 20,386.44 and 8,807.76 is: 12,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,772.66 : 20,386.44 = 8,807.76 : x
  2. Step 2: Convert to fraction form
    14,772.66/20,386.44 = 8,807.76/x
  3. Step 3: Cross multiply
    14,772.66x = 20,386.44 × 8,807.76
  4. Step 4: Simplify right side
    14,772.66x = 179,558,870.77
  5. Step 5: Solve for x
    x = 179,558,870.77/14,772.66
  6. Step 6: Final answer
    x = 12,154.81

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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.