Home / 31,609.45-47,400.15-16,815.00

Finding the Fourth Proportional to 31,609.45, 47,400.15 and 16,815.00

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Solution

The fourth proportional to 31,609.45, 47,400.15 and 16,815.00 is: 25,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,609.45 : 47,400.15 = 16,815.00 : x
  2. Step 2: Convert to fraction form
    31,609.45/47,400.15 = 16,815.00/x
  3. Step 3: Cross multiply
    31,609.45x = 47,400.15 × 16,815.00
  4. Step 4: Simplify right side
    31,609.45x = 797,033,763.06
  5. Step 5: Solve for x
    x = 797,033,763.06/31,609.45
  6. Step 6: Final answer
    x = 25,215.05

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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.