Home / 19,931.87-29,899.26-8,079.95

Finding the Fourth Proportional to 19,931.87, 29,899.26 and 8,079.95

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Solution

The fourth proportional to 19,931.87, 29,899.26 and 8,079.95 is: 12,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.87 : 29,899.26 = 8,079.95 : x
  2. Step 2: Convert to fraction form
    19,931.87/29,899.26 = 8,079.95/x
  3. Step 3: Cross multiply
    19,931.87x = 29,899.26 × 8,079.95
  4. Step 4: Simplify right side
    19,931.87x = 241,584,600.59
  5. Step 5: Solve for x
    x = 241,584,600.59/19,931.87
  6. Step 6: Final answer
    x = 12,120.52

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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.