Home / 20,070.57-27,672.21-12,887.82

Finding the Fourth Proportional to 20,070.57, 27,672.21 and 12,887.82

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Solution

The fourth proportional to 20,070.57, 27,672.21 and 12,887.82 is: 17,769.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.57 : 27,672.21 = 12,887.82 : x
  2. Step 2: Convert to fraction form
    20,070.57/27,672.21 = 12,887.82/x
  3. Step 3: Cross multiply
    20,070.57x = 27,672.21 × 12,887.82
  4. Step 4: Simplify right side
    20,070.57x = 356,634,461.48
  5. Step 5: Solve for x
    x = 356,634,461.48/20,070.57
  6. Step 6: Final answer
    x = 17,769.03

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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.