Home / 20,899.08-28,842.57-11,469.60

Finding the Fourth Proportional to 20,899.08, 28,842.57 and 11,469.60

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Solution

The fourth proportional to 20,899.08, 28,842.57 and 11,469.60 is: 15,829.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.08 : 28,842.57 = 11,469.60 : x
  2. Step 2: Convert to fraction form
    20,899.08/28,842.57 = 11,469.60/x
  3. Step 3: Cross multiply
    20,899.08x = 28,842.57 × 11,469.60
  4. Step 4: Simplify right side
    20,899.08x = 330,812,740.87
  5. Step 5: Solve for x
    x = 330,812,740.87/20,899.08
  6. Step 6: Final answer
    x = 15,829.06

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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.