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Finding the Fourth Proportional to 25,730.80, 38,599.80 and 10,939.60

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Solution

The fourth proportional to 25,730.80, 38,599.80 and 10,939.60 is: 16,410.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,730.80 : 38,599.80 = 10,939.60 : x
  2. Step 2: Convert to fraction form
    25,730.80/38,599.80 = 10,939.60/x
  3. Step 3: Cross multiply
    25,730.80x = 38,599.80 × 10,939.60
  4. Step 4: Simplify right side
    25,730.80x = 422,266,372.08
  5. Step 5: Solve for x
    x = 422,266,372.08/25,730.80
  6. Step 6: Final answer
    x = 16,410.93

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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.