Home / 20,567.74-28,356.04-15,441.56

Finding the Fourth Proportional to 20,567.74, 28,356.04 and 15,441.56

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Solution

The fourth proportional to 20,567.74, 28,356.04 and 15,441.56 is: 21,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.74 : 28,356.04 = 15,441.56 : x
  2. Step 2: Convert to fraction form
    20,567.74/28,356.04 = 15,441.56/x
  3. Step 3: Cross multiply
    20,567.74x = 28,356.04 × 15,441.56
  4. Step 4: Simplify right side
    20,567.74x = 437,861,493.02
  5. Step 5: Solve for x
    x = 437,861,493.02/20,567.74
  6. Step 6: Final answer
    x = 21,288.75

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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.