Home / 20,292.08-28,003.80-11,911.28

Finding the Fourth Proportional to 20,292.08, 28,003.80 and 11,911.28

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Solution

The fourth proportional to 20,292.08, 28,003.80 and 11,911.28 is: 16,437.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.08 : 28,003.80 = 11,911.28 : x
  2. Step 2: Convert to fraction form
    20,292.08/28,003.80 = 11,911.28/x
  3. Step 3: Cross multiply
    20,292.08x = 28,003.80 × 11,911.28
  4. Step 4: Simplify right side
    20,292.08x = 333,561,102.86
  5. Step 5: Solve for x
    x = 333,561,102.86/20,292.08
  6. Step 6: Final answer
    x = 16,437.99

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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.