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Finding the Fourth Proportional to 10,916.80, 16,365.60 and 9,750.40

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Solution

The fourth proportional to 10,916.80, 16,365.60 and 9,750.40 is: 14,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,916.80 : 16,365.60 = 9,750.40 : x
  2. Step 2: Convert to fraction form
    10,916.80/16,365.60 = 9,750.40/x
  3. Step 3: Cross multiply
    10,916.80x = 16,365.60 × 9,750.40
  4. Step 4: Simplify right side
    10,916.80x = 159,571,146.24
  5. Step 5: Solve for x
    x = 159,571,146.24/10,916.80
  6. Step 6: Final answer
    x = 14,617.03

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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.