Home / 20,434.16-30,608.70-13,001.81

Finding the Fourth Proportional to 20,434.16, 30,608.70 and 13,001.81

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Solution

The fourth proportional to 20,434.16, 30,608.70 and 13,001.81 is: 19,475.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.16 : 30,608.70 = 13,001.81 : x
  2. Step 2: Convert to fraction form
    20,434.16/30,608.70 = 13,001.81/x
  3. Step 3: Cross multiply
    20,434.16x = 30,608.70 × 13,001.81
  4. Step 4: Simplify right side
    20,434.16x = 397,968,348.70
  5. Step 5: Solve for x
    x = 397,968,348.70/20,434.16
  6. Step 6: Final answer
    x = 19,475.65

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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.