Home / 20,253.78-30,379.32-6,925.50

Finding the Fourth Proportional to 20,253.78, 30,379.32 and 6,925.50

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Solution

The fourth proportional to 20,253.78, 30,379.32 and 6,925.50 is: 10,387.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.78 : 30,379.32 = 6,925.50 : x
  2. Step 2: Convert to fraction form
    20,253.78/30,379.32 = 6,925.50/x
  3. Step 3: Cross multiply
    20,253.78x = 30,379.32 × 6,925.50
  4. Step 4: Simplify right side
    20,253.78x = 210,391,980.66
  5. Step 5: Solve for x
    x = 210,391,980.66/20,253.78
  6. Step 6: Final answer
    x = 10,387.79

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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.