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Finding the Fourth Proportional to 8,916.81, 13,377.96 and 7,068.80

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Solution

The fourth proportional to 8,916.81, 13,377.96 and 7,068.80 is: 10,605.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.81 : 13,377.96 = 7,068.80 : x
  2. Step 2: Convert to fraction form
    8,916.81/13,377.96 = 7,068.80/x
  3. Step 3: Cross multiply
    8,916.81x = 13,377.96 × 7,068.80
  4. Step 4: Simplify right side
    8,916.81x = 94,566,056.76
  5. Step 5: Solve for x
    x = 94,566,056.76/8,916.81
  6. Step 6: Final answer
    x = 10,605.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.