Home / 31,379.81-47,069.74-19,701.23

Finding the Fourth Proportional to 31,379.81, 47,069.74 and 19,701.23

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Solution

The fourth proportional to 31,379.81, 47,069.74 and 19,701.23 is: 29,551.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.81 : 47,069.74 = 19,701.23 : x
  2. Step 2: Convert to fraction form
    31,379.81/47,069.74 = 19,701.23/x
  3. Step 3: Cross multiply
    31,379.81x = 47,069.74 × 19,701.23
  4. Step 4: Simplify right side
    31,379.81x = 927,331,773.78
  5. Step 5: Solve for x
    x = 927,331,773.78/31,379.81
  6. Step 6: Final answer
    x = 29,551.86

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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.