Home / 19,790.08-29,685.12-8,100.64

Finding the Fourth Proportional to 19,790.08, 29,685.12 and 8,100.64

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Solution

The fourth proportional to 19,790.08, 29,685.12 and 8,100.64 is: 12,150.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.08 : 29,685.12 = 8,100.64 : x
  2. Step 2: Convert to fraction form
    19,790.08/29,685.12 = 8,100.64/x
  3. Step 3: Cross multiply
    19,790.08x = 29,685.12 × 8,100.64
  4. Step 4: Simplify right side
    19,790.08x = 240,468,470.48
  5. Step 5: Solve for x
    x = 240,468,470.48/19,790.08
  6. Step 6: Final answer
    x = 12,150.96

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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.