Home / 20,473.12-28,252.58-11,520.62

Finding the Fourth Proportional to 20,473.12, 28,252.58 and 11,520.62

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Solution

The fourth proportional to 20,473.12, 28,252.58 and 11,520.62 is: 15,898.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.12 : 28,252.58 = 11,520.62 : x
  2. Step 2: Convert to fraction form
    20,473.12/28,252.58 = 11,520.62/x
  3. Step 3: Cross multiply
    20,473.12x = 28,252.58 × 11,520.62
  4. Step 4: Simplify right side
    20,473.12x = 325,487,238.20
  5. Step 5: Solve for x
    x = 325,487,238.20/20,473.12
  6. Step 6: Final answer
    x = 15,898.27

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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.