Home / 20,900.18-28,842.69-11,468.73

Finding the Fourth Proportional to 20,900.18, 28,842.69 and 11,468.73

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Solution

The fourth proportional to 20,900.18, 28,842.69 and 11,468.73 is: 15,827.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.18 : 28,842.69 = 11,468.73 : x
  2. Step 2: Convert to fraction form
    20,900.18/28,842.69 = 11,468.73/x
  3. Step 3: Cross multiply
    20,900.18x = 28,842.69 × 11,468.73
  4. Step 4: Simplify right side
    20,900.18x = 330,789,024.08
  5. Step 5: Solve for x
    x = 330,789,024.08/20,900.18
  6. Step 6: Final answer
    x = 15,827.09

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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.