Home / 19,400.60-29,079.30-8,305.40

Finding the Fourth Proportional to 19,400.60, 29,079.30 and 8,305.40

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Solution

The fourth proportional to 19,400.60, 29,079.30 and 8,305.40 is: 12,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.60 : 29,079.30 = 8,305.40 : x
  2. Step 2: Convert to fraction form
    19,400.60/29,079.30 = 8,305.40/x
  3. Step 3: Cross multiply
    19,400.60x = 29,079.30 × 8,305.40
  4. Step 4: Simplify right side
    19,400.60x = 241,515,218.22
  5. Step 5: Solve for x
    x = 241,515,218.22/19,400.60
  6. Step 6: Final answer
    x = 12,448.85

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1.5x scale

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.