Home / 31,811.20-47,716.80-17,065.60

Finding the Fourth Proportional to 31,811.20, 47,716.80 and 17,065.60

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Solution

The fourth proportional to 31,811.20, 47,716.80 and 17,065.60 is: 25,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.20 : 47,716.80 = 17,065.60 : x
  2. Step 2: Convert to fraction form
    31,811.20/47,716.80 = 17,065.60/x
  3. Step 3: Cross multiply
    31,811.20x = 47,716.80 × 17,065.60
  4. Step 4: Simplify right side
    31,811.20x = 814,315,822.08
  5. Step 5: Solve for x
    x = 814,315,822.08/31,811.20
  6. Step 6: Final answer
    x = 25,598.40

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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.