Home / 31,815.60-47,723.40-18,693.60

Finding the Fourth Proportional to 31,815.60, 47,723.40 and 18,693.60

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Solution

The fourth proportional to 31,815.60, 47,723.40 and 18,693.60 is: 28,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.60 : 47,723.40 = 18,693.60 : x
  2. Step 2: Convert to fraction form
    31,815.60/47,723.40 = 18,693.60/x
  3. Step 3: Cross multiply
    31,815.60x = 47,723.40 × 18,693.60
  4. Step 4: Simplify right side
    31,815.60x = 892,122,150.24
  5. Step 5: Solve for x
    x = 892,122,150.24/31,815.60
  6. Step 6: Final answer
    x = 28,040.40

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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.