Home / 31,919.96-47,763.30-18,778.52

Finding the Fourth Proportional to 31,919.96, 47,763.30 and 18,778.52

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Solution

The fourth proportional to 31,919.96, 47,763.30 and 18,778.52 is: 28,099.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,919.96 : 47,763.30 = 18,778.52 : x
  2. Step 2: Convert to fraction form
    31,919.96/47,763.30 = 18,778.52/x
  3. Step 3: Cross multiply
    31,919.96x = 47,763.30 × 18,778.52
  4. Step 4: Simplify right side
    31,919.96x = 896,924,084.32
  5. Step 5: Solve for x
    x = 896,924,084.32/31,919.96
  6. Step 6: Final answer
    x = 28,099.16

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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.