Home / 20,900.59-28,842.73-11,469.31

Finding the Fourth Proportional to 20,900.59, 28,842.73 and 11,469.31

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Solution

The fourth proportional to 20,900.59, 28,842.73 and 11,469.31 is: 15,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.59 : 28,842.73 = 11,469.31 : x
  2. Step 2: Convert to fraction form
    20,900.59/28,842.73 = 11,469.31/x
  3. Step 3: Cross multiply
    20,900.59x = 28,842.73 × 11,469.31
  4. Step 4: Simplify right side
    20,900.59x = 330,806,211.62
  5. Step 5: Solve for x
    x = 330,806,211.62/20,900.59
  6. Step 6: Final answer
    x = 15,827.60

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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.