Home / 31,785.21-47,658.77-10,724.78

Finding the Fourth Proportional to 31,785.21, 47,658.77 and 10,724.78

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Solution

The fourth proportional to 31,785.21, 47,658.77 and 10,724.78 is: 16,080.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.21 : 47,658.77 = 10,724.78 : x
  2. Step 2: Convert to fraction form
    31,785.21/47,658.77 = 10,724.78/x
  3. Step 3: Cross multiply
    31,785.21x = 47,658.77 × 10,724.78
  4. Step 4: Simplify right side
    31,785.21x = 511,129,969.28
  5. Step 5: Solve for x
    x = 511,129,969.28/31,785.21
  6. Step 6: Final answer
    x = 16,080.75

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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.