Home / 31,520.25-47,248.47-20,433.98

Finding the Fourth Proportional to 31,520.25, 47,248.47 and 20,433.98

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Solution

The fourth proportional to 31,520.25, 47,248.47 and 20,433.98 is: 30,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,520.25 : 47,248.47 = 20,433.98 : x
  2. Step 2: Convert to fraction form
    31,520.25/47,248.47 = 20,433.98/x
  3. Step 3: Cross multiply
    31,520.25x = 47,248.47 × 20,433.98
  4. Step 4: Simplify right side
    31,520.25x = 965,474,054.77
  5. Step 5: Solve for x
    x = 965,474,054.77/31,520.25
  6. Step 6: Final answer
    x = 30,630.28

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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.