Home / 20,186.10-27,870.53-12,635.48

Finding the Fourth Proportional to 20,186.10, 27,870.53 and 12,635.48

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Solution

The fourth proportional to 20,186.10, 27,870.53 and 12,635.48 is: 17,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.10 : 27,870.53 = 12,635.48 : x
  2. Step 2: Convert to fraction form
    20,186.10/27,870.53 = 12,635.48/x
  3. Step 3: Cross multiply
    20,186.10x = 27,870.53 × 12,635.48
  4. Step 4: Simplify right side
    20,186.10x = 352,157,321.87
  5. Step 5: Solve for x
    x = 352,157,321.87/20,186.10
  6. Step 6: Final answer
    x = 17,445.54

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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.