Home / 19,818.46-29,727.87-8,571.70

Finding the Fourth Proportional to 19,818.46, 29,727.87 and 8,571.70

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Solution

The fourth proportional to 19,818.46, 29,727.87 and 8,571.70 is: 12,857.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.46 : 29,727.87 = 8,571.70 : x
  2. Step 2: Convert to fraction form
    19,818.46/29,727.87 = 8,571.70/x
  3. Step 3: Cross multiply
    19,818.46x = 29,727.87 × 8,571.70
  4. Step 4: Simplify right side
    19,818.46x = 254,818,383.28
  5. Step 5: Solve for x
    x = 254,818,383.28/19,818.46
  6. Step 6: Final answer
    x = 12,857.63

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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.