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Finding the Fourth Proportional to 28,621.60, 43,047.60 and 25,626.40

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Solution

The fourth proportional to 28,621.60, 43,047.60 and 25,626.40 is: 38,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.60 : 43,047.60 = 25,626.40 : x
  2. Step 2: Convert to fraction form
    28,621.60/43,047.60 = 25,626.40/x
  3. Step 3: Cross multiply
    28,621.60x = 43,047.60 × 25,626.40
  4. Step 4: Simplify right side
    28,621.60x = 1,103,155,016.64
  5. Step 5: Solve for x
    x = 1,103,155,016.64/28,621.60
  6. Step 6: Final answer
    x = 38,542.74

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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.