Home / 20,296.16-28,006.80-11,911.04

Finding the Fourth Proportional to 20,296.16, 28,006.80 and 11,911.04

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Solution

The fourth proportional to 20,296.16, 28,006.80 and 11,911.04 is: 16,436.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.16 : 28,006.80 = 11,911.04 : x
  2. Step 2: Convert to fraction form
    20,296.16/28,006.80 = 11,911.04/x
  3. Step 3: Cross multiply
    20,296.16x = 28,006.80 × 11,911.04
  4. Step 4: Simplify right side
    20,296.16x = 333,590,115.07
  5. Step 5: Solve for x
    x = 333,590,115.07/20,296.16
  6. Step 6: Final answer
    x = 16,436.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.