Home / 31,368.69-47,069.10-20,845.98

Finding the Fourth Proportional to 31,368.69, 47,069.10 and 20,845.98

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Solution

The fourth proportional to 31,368.69, 47,069.10 and 20,845.98 is: 31,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.69 : 47,069.10 = 20,845.98 : x
  2. Step 2: Convert to fraction form
    31,368.69/47,069.10 = 20,845.98/x
  3. Step 3: Cross multiply
    31,368.69x = 47,069.10 × 20,845.98
  4. Step 4: Simplify right side
    31,368.69x = 981,201,517.22
  5. Step 5: Solve for x
    x = 981,201,517.22/31,368.69
  6. Step 6: Final answer
    x = 31,279.65

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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.