Home / 31,318.72-46,946.24-19,640.08

Finding the Fourth Proportional to 31,318.72, 46,946.24 and 19,640.08

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Solution

The fourth proportional to 31,318.72, 46,946.24 and 19,640.08 is: 29,440.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.72 : 46,946.24 = 19,640.08 : x
  2. Step 2: Convert to fraction form
    31,318.72/46,946.24 = 19,640.08/x
  3. Step 3: Cross multiply
    31,318.72x = 46,946.24 × 19,640.08
  4. Step 4: Simplify right side
    31,318.72x = 922,027,909.30
  5. Step 5: Solve for x
    x = 922,027,909.30/31,318.72
  6. Step 6: Final answer
    x = 29,440.15

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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.