Home / 19,995.15-29,986.38-8,305.50

Finding the Fourth Proportional to 19,995.15, 29,986.38 and 8,305.50

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Solution

The fourth proportional to 19,995.15, 29,986.38 and 8,305.50 is: 12,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.15 : 29,986.38 = 8,305.50 : x
  2. Step 2: Convert to fraction form
    19,995.15/29,986.38 = 8,305.50/x
  3. Step 3: Cross multiply
    19,995.15x = 29,986.38 × 8,305.50
  4. Step 4: Simplify right side
    19,995.15x = 249,051,879.09
  5. Step 5: Solve for x
    x = 249,051,879.09/19,995.15
  6. Step 6: Final answer
    x = 12,455.61

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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.