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Finding the Fourth Proportional to 11,235.10, 16,852.65 and 7,079.80

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Solution

The fourth proportional to 11,235.10, 16,852.65 and 7,079.80 is: 10,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,235.10 : 16,852.65 = 7,079.80 : x
  2. Step 2: Convert to fraction form
    11,235.10/16,852.65 = 7,079.80/x
  3. Step 3: Cross multiply
    11,235.10x = 16,852.65 × 7,079.80
  4. Step 4: Simplify right side
    11,235.10x = 119,313,391.47
  5. Step 5: Solve for x
    x = 119,313,391.47/11,235.10
  6. Step 6: Final answer
    x = 10,619.70

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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.