Home / 20,945.34-31,411.94-6,151.50

Finding the Fourth Proportional to 20,945.34, 31,411.94 and 6,151.50

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Solution

The fourth proportional to 20,945.34, 31,411.94 and 6,151.50 is: 9,225.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.34 : 31,411.94 = 6,151.50 : x
  2. Step 2: Convert to fraction form
    20,945.34/31,411.94 = 6,151.50/x
  3. Step 3: Cross multiply
    20,945.34x = 31,411.94 × 6,151.50
  4. Step 4: Simplify right side
    20,945.34x = 193,230,518.15
  5. Step 5: Solve for x
    x = 193,230,518.15/20,945.34
  6. Step 6: Final answer
    x = 9,225.47

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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.