Home / 31,299.18-43,192.28-19,359.38

Finding the Fourth Proportional to 31,299.18, 43,192.28 and 19,359.38

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Solution

The fourth proportional to 31,299.18, 43,192.28 and 19,359.38 is: 26,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,299.18 : 43,192.28 = 19,359.38 : x
  2. Step 2: Convert to fraction form
    31,299.18/43,192.28 = 19,359.38/x
  3. Step 3: Cross multiply
    31,299.18x = 43,192.28 × 19,359.38
  4. Step 4: Simplify right side
    31,299.18x = 836,175,761.59
  5. Step 5: Solve for x
    x = 836,175,761.59/31,299.18
  6. Step 6: Final answer
    x = 26,715.58

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1.5x scale

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.