Home / 25,931.61-35,786.07-15,321.22

Finding the Fourth Proportional to 25,931.61, 35,786.07 and 15,321.22

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Solution

The fourth proportional to 25,931.61, 35,786.07 and 15,321.22 is: 21,143.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,931.61 : 35,786.07 = 15,321.22 : x
  2. Step 2: Convert to fraction form
    25,931.61/35,786.07 = 15,321.22/x
  3. Step 3: Cross multiply
    25,931.61x = 35,786.07 × 15,321.22
  4. Step 4: Simplify right side
    25,931.61x = 548,286,251.41
  5. Step 5: Solve for x
    x = 548,286,251.41/25,931.61
  6. Step 6: Final answer
    x = 21,143.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.