Home / 31,838.13-43,918.32-19,880.71

Finding the Fourth Proportional to 31,838.13, 43,918.32 and 19,880.71

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Solution

The fourth proportional to 31,838.13, 43,918.32 and 19,880.71 is: 27,423.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,838.13 : 43,918.32 = 19,880.71 : x
  2. Step 2: Convert to fraction form
    31,838.13/43,918.32 = 19,880.71/x
  3. Step 3: Cross multiply
    31,838.13x = 43,918.32 × 19,880.71
  4. Step 4: Simplify right side
    31,838.13x = 873,127,383.61
  5. Step 5: Solve for x
    x = 873,127,383.61/31,838.13
  6. Step 6: Final answer
    x = 27,423.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.