Home / 31,455.60-47,205.24-20,334.70

Finding the Fourth Proportional to 31,455.60, 47,205.24 and 20,334.70

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Solution

The fourth proportional to 31,455.60, 47,205.24 and 20,334.70 is: 30,516.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.60 : 47,205.24 = 20,334.70 : x
  2. Step 2: Convert to fraction form
    31,455.60/47,205.24 = 20,334.70/x
  3. Step 3: Cross multiply
    31,455.60x = 47,205.24 × 20,334.70
  4. Step 4: Simplify right side
    31,455.60x = 959,904,393.83
  5. Step 5: Solve for x
    x = 959,904,393.83/31,455.60
  6. Step 6: Final answer
    x = 30,516.17

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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.