Home / 31,551.86-47,327.63-7,859.30

Finding the Fourth Proportional to 31,551.86, 47,327.63 and 7,859.30

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Solution

The fourth proportional to 31,551.86, 47,327.63 and 7,859.30 is: 11,788.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,551.86 : 47,327.63 = 7,859.30 : x
  2. Step 2: Convert to fraction form
    31,551.86/47,327.63 = 7,859.30/x
  3. Step 3: Cross multiply
    31,551.86x = 47,327.63 × 7,859.30
  4. Step 4: Simplify right side
    31,551.86x = 371,961,766.52
  5. Step 5: Solve for x
    x = 371,961,766.52/31,551.86
  6. Step 6: Final answer
    x = 11,788.90

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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.