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Finding the Fourth Proportional to 25,230.60, 37,845.90 and 7,700.40

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Solution

The fourth proportional to 25,230.60, 37,845.90 and 7,700.40 is: 11,550.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,230.60 : 37,845.90 = 7,700.40 : x
  2. Step 2: Convert to fraction form
    25,230.60/37,845.90 = 7,700.40/x
  3. Step 3: Cross multiply
    25,230.60x = 37,845.90 × 7,700.40
  4. Step 4: Simplify right side
    25,230.60x = 291,428,568.36
  5. Step 5: Solve for x
    x = 291,428,568.36/25,230.60
  6. Step 6: Final answer
    x = 11,550.60

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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.