Home / 20,344.08-28,073.22-11,389.50

Finding the Fourth Proportional to 20,344.08, 28,073.22 and 11,389.50

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Solution

The fourth proportional to 20,344.08, 28,073.22 and 11,389.50 is: 15,716.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.08 : 28,073.22 = 11,389.50 : x
  2. Step 2: Convert to fraction form
    20,344.08/28,073.22 = 11,389.50/x
  3. Step 3: Cross multiply
    20,344.08x = 28,073.22 × 11,389.50
  4. Step 4: Simplify right side
    20,344.08x = 319,739,939.19
  5. Step 5: Solve for x
    x = 319,739,939.19/20,344.08
  6. Step 6: Final answer
    x = 15,716.61

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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.