Home / 20,338.08-28,061.72-11,835.05

Finding the Fourth Proportional to 20,338.08, 28,061.72 and 11,835.05

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Solution

The fourth proportional to 20,338.08, 28,061.72 and 11,835.05 is: 16,329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.08 : 28,061.72 = 11,835.05 : x
  2. Step 2: Convert to fraction form
    20,338.08/28,061.72 = 11,835.05/x
  3. Step 3: Cross multiply
    20,338.08x = 28,061.72 × 11,835.05
  4. Step 4: Simplify right side
    20,338.08x = 332,111,967.26
  5. Step 5: Solve for x
    x = 332,111,967.26/20,338.08
  6. Step 6: Final answer
    x = 16,329.56

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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.