Home / 31,006.36-42,716.46-21,558.52

Finding the Fourth Proportional to 31,006.36, 42,716.46 and 21,558.52

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Solution

The fourth proportional to 31,006.36, 42,716.46 and 21,558.52 is: 29,700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,006.36 : 42,716.46 = 21,558.52 : x
  2. Step 2: Convert to fraction form
    31,006.36/42,716.46 = 21,558.52/x
  3. Step 3: Cross multiply
    31,006.36x = 42,716.46 × 21,558.52
  4. Step 4: Simplify right side
    31,006.36x = 920,903,657.24
  5. Step 5: Solve for x
    x = 920,903,657.24/31,006.36
  6. Step 6: Final answer
    x = 29,700.48

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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.