Home / 20,832.69-31,251.47-7,319.71

Finding the Fourth Proportional to 20,832.69, 31,251.47 and 7,319.71

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Solution

The fourth proportional to 20,832.69, 31,251.47 and 7,319.71 is: 10,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.69 : 31,251.47 = 7,319.71 : x
  2. Step 2: Convert to fraction form
    20,832.69/31,251.47 = 7,319.71/x
  3. Step 3: Cross multiply
    20,832.69x = 31,251.47 × 7,319.71
  4. Step 4: Simplify right side
    20,832.69x = 228,751,697.47
  5. Step 5: Solve for x
    x = 228,751,697.47/20,832.69
  6. Step 6: Final answer
    x = 10,980.42

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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.