Home / 31,880.91-47,822.12-14,107.78

Finding the Fourth Proportional to 31,880.91, 47,822.12 and 14,107.78

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Solution

The fourth proportional to 31,880.91, 47,822.12 and 14,107.78 is: 21,162.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,880.91 : 47,822.12 = 14,107.78 : x
  2. Step 2: Convert to fraction form
    31,880.91/47,822.12 = 14,107.78/x
  3. Step 3: Cross multiply
    31,880.91x = 47,822.12 × 14,107.78
  4. Step 4: Simplify right side
    31,880.91x = 674,663,948.09
  5. Step 5: Solve for x
    x = 674,663,948.09/31,880.91
  6. Step 6: Final answer
    x = 21,162.00

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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.