Home / 25,138.80-37,716.40-11,989.46

Finding the Fourth Proportional to 25,138.80, 37,716.40 and 11,989.46

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Solution

The fourth proportional to 25,138.80, 37,716.40 and 11,989.46 is: 17,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,138.80 : 37,716.40 = 11,989.46 : x
  2. Step 2: Convert to fraction form
    25,138.80/37,716.40 = 11,989.46/x
  3. Step 3: Cross multiply
    25,138.80x = 37,716.40 × 11,989.46
  4. Step 4: Simplify right side
    25,138.80x = 452,199,378.42
  5. Step 5: Solve for x
    x = 452,199,378.42/25,138.80
  6. Step 6: Final answer
    x = 17,988.11

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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.