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Finding the Fourth Proportional to 25,313.70, 37,970.55 and 12,872.10

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Solution

The fourth proportional to 25,313.70, 37,970.55 and 12,872.10 is: 19,308.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,313.70 : 37,970.55 = 12,872.10 : x
  2. Step 2: Convert to fraction form
    25,313.70/37,970.55 = 12,872.10/x
  3. Step 3: Cross multiply
    25,313.70x = 37,970.55 × 12,872.10
  4. Step 4: Simplify right side
    25,313.70x = 488,760,716.66
  5. Step 5: Solve for x
    x = 488,760,716.66/25,313.70
  6. Step 6: Final answer
    x = 19,308.15

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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.