Home / 20,056.20-27,674.22-12,887.70

Finding the Fourth Proportional to 20,056.20, 27,674.22 and 12,887.70

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Solution

The fourth proportional to 20,056.20, 27,674.22 and 12,887.70 is: 17,782.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,056.20 : 27,674.22 = 12,887.70 : x
  2. Step 2: Convert to fraction form
    20,056.20/27,674.22 = 12,887.70/x
  3. Step 3: Cross multiply
    20,056.20x = 27,674.22 × 12,887.70
  4. Step 4: Simplify right side
    20,056.20x = 356,657,045.09
  5. Step 5: Solve for x
    x = 356,657,045.09/20,056.20
  6. Step 6: Final answer
    x = 17,782.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.