Home / 20,071.56-30,112.62-6,924.87

Finding the Fourth Proportional to 20,071.56, 30,112.62 and 6,924.87

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Solution

The fourth proportional to 20,071.56, 30,112.62 and 6,924.87 is: 10,389.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.56 : 30,112.62 = 6,924.87 : x
  2. Step 2: Convert to fraction form
    20,071.56/30,112.62 = 6,924.87/x
  3. Step 3: Cross multiply
    20,071.56x = 30,112.62 × 6,924.87
  4. Step 4: Simplify right side
    20,071.56x = 208,525,978.86
  5. Step 5: Solve for x
    x = 208,525,978.86/20,071.56
  6. Step 6: Final answer
    x = 10,389.13

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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.