Home / 31,215.50-46,823.30-12,747.50

Finding the Fourth Proportional to 31,215.50, 46,823.30 and 12,747.50

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Solution

The fourth proportional to 31,215.50, 46,823.30 and 12,747.50 is: 19,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,215.50 : 46,823.30 = 12,747.50 : x
  2. Step 2: Convert to fraction form
    31,215.50/46,823.30 = 12,747.50/x
  3. Step 3: Cross multiply
    31,215.50x = 46,823.30 × 12,747.50
  4. Step 4: Simplify right side
    31,215.50x = 596,879,953.01
  5. Step 5: Solve for x
    x = 596,879,953.01/31,215.50
  6. Step 6: Final answer
    x = 19,121.27

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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.