Home / 20,917.40-31,373.80-6,126.47

Finding the Fourth Proportional to 20,917.40, 31,373.80 and 6,126.47

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Solution

The fourth proportional to 20,917.40, 31,373.80 and 6,126.47 is: 9,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.40 : 31,373.80 = 6,126.47 : x
  2. Step 2: Convert to fraction form
    20,917.40/31,373.80 = 6,126.47/x
  3. Step 3: Cross multiply
    20,917.40x = 31,373.80 × 6,126.47
  4. Step 4: Simplify right side
    20,917.40x = 192,210,644.49
  5. Step 5: Solve for x
    x = 192,210,644.49/20,917.40
  6. Step 6: Final answer
    x = 9,189.03

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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.