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Finding the Fourth Proportional to 25,153.68, 37,703.79 and 11,978.22

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Solution

The fourth proportional to 25,153.68, 37,703.79 and 11,978.22 is: 17,954.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,153.68 : 37,703.79 = 11,978.22 : x
  2. Step 2: Convert to fraction form
    25,153.68/37,703.79 = 11,978.22/x
  3. Step 3: Cross multiply
    25,153.68x = 37,703.79 × 11,978.22
  4. Step 4: Simplify right side
    25,153.68x = 451,624,291.45
  5. Step 5: Solve for x
    x = 451,624,291.45/25,153.68
  6. Step 6: Final answer
    x = 17,954.60

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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.