Home / 31,355.28-47,023.44-12,629.28

Finding the Fourth Proportional to 31,355.28, 47,023.44 and 12,629.28

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Solution

The fourth proportional to 31,355.28, 47,023.44 and 12,629.28 is: 18,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.28 : 47,023.44 = 12,629.28 : x
  2. Step 2: Convert to fraction form
    31,355.28/47,023.44 = 12,629.28/x
  3. Step 3: Cross multiply
    31,355.28x = 47,023.44 × 12,629.28
  4. Step 4: Simplify right side
    31,355.28x = 593,872,190.32
  5. Step 5: Solve for x
    x = 593,872,190.32/31,355.28
  6. Step 6: Final answer
    x = 18,940.10

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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.