Home / 20,511.91-30,757.61-9,409.13

Finding the Fourth Proportional to 20,511.91, 30,757.61 and 9,409.13

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Solution

The fourth proportional to 20,511.91, 30,757.61 and 9,409.13 is: 14,108.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.91 : 30,757.61 = 9,409.13 : x
  2. Step 2: Convert to fraction form
    20,511.91/30,757.61 = 9,409.13/x
  3. Step 3: Cross multiply
    20,511.91x = 30,757.61 × 9,409.13
  4. Step 4: Simplify right side
    20,511.91x = 289,402,150.15
  5. Step 5: Solve for x
    x = 289,402,150.15/20,511.91
  6. Step 6: Final answer
    x = 14,108.98

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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.