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Finding the Fourth Proportional to 10,804.80, 16,174.80 and 9,638.40

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Solution

The fourth proportional to 10,804.80, 16,174.80 and 9,638.40 is: 14,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,804.80 : 16,174.80 = 9,638.40 : x
  2. Step 2: Convert to fraction form
    10,804.80/16,174.80 = 9,638.40/x
  3. Step 3: Cross multiply
    10,804.80x = 16,174.80 × 9,638.40
  4. Step 4: Simplify right side
    10,804.80x = 155,899,192.32
  5. Step 5: Solve for x
    x = 155,899,192.32/10,804.80
  6. Step 6: Final answer
    x = 14,428.70

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1.5x scale

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.