Home / 20,142.16-27,798.06-12,186.34

Finding the Fourth Proportional to 20,142.16, 27,798.06 and 12,186.34

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Solution

The fourth proportional to 20,142.16, 27,798.06 and 12,186.34 is: 16,818.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.16 : 27,798.06 = 12,186.34 : x
  2. Step 2: Convert to fraction form
    20,142.16/27,798.06 = 12,186.34/x
  3. Step 3: Cross multiply
    20,142.16x = 27,798.06 × 12,186.34
  4. Step 4: Simplify right side
    20,142.16x = 338,756,610.50
  5. Step 5: Solve for x
    x = 338,756,610.50/20,142.16
  6. Step 6: Final answer
    x = 16,818.29

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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.