Home / 20,639.14-28,452.06-15,253.65

Finding the Fourth Proportional to 20,639.14, 28,452.06 and 15,253.65

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Solution

The fourth proportional to 20,639.14, 28,452.06 and 15,253.65 is: 21,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.14 : 28,452.06 = 15,253.65 : x
  2. Step 2: Convert to fraction form
    20,639.14/28,452.06 = 15,253.65/x
  3. Step 3: Cross multiply
    20,639.14x = 28,452.06 × 15,253.65
  4. Step 4: Simplify right side
    20,639.14x = 433,997,765.02
  5. Step 5: Solve for x
    x = 433,997,765.02/20,639.14
  6. Step 6: Final answer
    x = 21,027.90

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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.