Home / 20,529.08-28,330.28-11,575.72

Finding the Fourth Proportional to 20,529.08, 28,330.28 and 11,575.72

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Solution

The fourth proportional to 20,529.08, 28,330.28 and 11,575.72 is: 15,974.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.08 : 28,330.28 = 11,575.72 : x
  2. Step 2: Convert to fraction form
    20,529.08/28,330.28 = 11,575.72/x
  3. Step 3: Cross multiply
    20,529.08x = 28,330.28 × 11,575.72
  4. Step 4: Simplify right side
    20,529.08x = 327,943,388.80
  5. Step 5: Solve for x
    x = 327,943,388.80/20,529.08
  6. Step 6: Final answer
    x = 15,974.58

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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.