Home / 31,726.80-47,586.60-8,355.06

Finding the Fourth Proportional to 31,726.80, 47,586.60 and 8,355.06

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Solution

The fourth proportional to 31,726.80, 47,586.60 and 8,355.06 is: 12,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,726.80 : 47,586.60 = 8,355.06 : x
  2. Step 2: Convert to fraction form
    31,726.80/47,586.60 = 8,355.06/x
  3. Step 3: Cross multiply
    31,726.80x = 47,586.60 × 8,355.06
  4. Step 4: Simplify right side
    31,726.80x = 397,588,898.20
  5. Step 5: Solve for x
    x = 397,588,898.20/31,726.80
  6. Step 6: Final answer
    x = 12,531.64

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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.