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Finding the Fourth Proportional to 28,900.60, 43,310.40 and 22,987.60

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Solution

The fourth proportional to 28,900.60, 43,310.40 and 22,987.60 is: 34,449.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,900.60 : 43,310.40 = 22,987.60 : x
  2. Step 2: Convert to fraction form
    28,900.60/43,310.40 = 22,987.60/x
  3. Step 3: Cross multiply
    28,900.60x = 43,310.40 × 22,987.60
  4. Step 4: Simplify right side
    28,900.60x = 995,602,151.04
  5. Step 5: Solve for x
    x = 995,602,151.04/28,900.60
  6. Step 6: Final answer
    x = 34,449.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.