Home / 20,161.35-30,180.06-12,740.13

Finding the Fourth Proportional to 20,161.35, 30,180.06 and 12,740.13

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Solution

The fourth proportional to 20,161.35, 30,180.06 and 12,740.13 is: 19,071.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.35 : 30,180.06 = 12,740.13 : x
  2. Step 2: Convert to fraction form
    20,161.35/30,180.06 = 12,740.13/x
  3. Step 3: Cross multiply
    20,161.35x = 30,180.06 × 12,740.13
  4. Step 4: Simplify right side
    20,161.35x = 384,497,887.81
  5. Step 5: Solve for x
    x = 384,497,887.81/20,161.35
  6. Step 6: Final answer
    x = 19,071.04

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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.