Home / 31,350.87-47,006.31-20,664.89

Finding the Fourth Proportional to 31,350.87, 47,006.31 and 20,664.89

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Solution

The fourth proportional to 31,350.87, 47,006.31 and 20,664.89 is: 30,984.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,350.87 : 47,006.31 = 20,664.89 : x
  2. Step 2: Convert to fraction form
    31,350.87/47,006.31 = 20,664.89/x
  3. Step 3: Cross multiply
    31,350.87x = 47,006.31 × 20,664.89
  4. Step 4: Simplify right side
    31,350.87x = 971,380,342.97
  5. Step 5: Solve for x
    x = 971,380,342.97/31,350.87
  6. Step 6: Final answer
    x = 30,984.16

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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.