Home / 31,521.02-47,249.60-20,434.73

Finding the Fourth Proportional to 31,521.02, 47,249.60 and 20,434.73

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Solution

The fourth proportional to 31,521.02, 47,249.60 and 20,434.73 is: 30,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,521.02 : 47,249.60 = 20,434.73 : x
  2. Step 2: Convert to fraction form
    31,521.02/47,249.60 = 20,434.73/x
  3. Step 3: Cross multiply
    31,521.02x = 47,249.60 × 20,434.73
  4. Step 4: Simplify right side
    31,521.02x = 965,532,480.19
  5. Step 5: Solve for x
    x = 965,532,480.19/31,521.02
  6. Step 6: Final answer
    x = 30,631.39

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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.