Home / 31,555.86-47,297.44-12,815.31

Finding the Fourth Proportional to 31,555.86, 47,297.44 and 12,815.31

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Solution

The fourth proportional to 31,555.86, 47,297.44 and 12,815.31 is: 19,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,555.86 : 47,297.44 = 12,815.31 : x
  2. Step 2: Convert to fraction form
    31,555.86/47,297.44 = 12,815.31/x
  3. Step 3: Cross multiply
    31,555.86x = 47,297.44 × 12,815.31
  4. Step 4: Simplify right side
    31,555.86x = 606,131,355.81
  5. Step 5: Solve for x
    x = 606,131,355.81/31,555.86
  6. Step 6: Final answer
    x = 19,208.20

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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.