Home / 31,539.75-47,213.01-20,424.32

Finding the Fourth Proportional to 31,539.75, 47,213.01 and 20,424.32

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Solution

The fourth proportional to 31,539.75, 47,213.01 and 20,424.32 is: 30,573.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,539.75 : 47,213.01 = 20,424.32 : x
  2. Step 2: Convert to fraction form
    31,539.75/47,213.01 = 20,424.32/x
  3. Step 3: Cross multiply
    31,539.75x = 47,213.01 × 20,424.32
  4. Step 4: Simplify right side
    31,539.75x = 964,293,388.34
  5. Step 5: Solve for x
    x = 964,293,388.34/31,539.75
  6. Step 6: Final answer
    x = 30,573.91

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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.