Home / 31,156.23-43,000.54-19,813.91

Finding the Fourth Proportional to 31,156.23, 43,000.54 and 19,813.91

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Solution

The fourth proportional to 31,156.23, 43,000.54 and 19,813.91 is: 27,346.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,156.23 : 43,000.54 = 19,813.91 : x
  2. Step 2: Convert to fraction form
    31,156.23/43,000.54 = 19,813.91/x
  3. Step 3: Cross multiply
    31,156.23x = 43,000.54 × 19,813.91
  4. Step 4: Simplify right side
    31,156.23x = 852,008,564.97
  5. Step 5: Solve for x
    x = 852,008,564.97/31,156.23
  6. Step 6: Final answer
    x = 27,346.33

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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.