Home / 20,923.38-31,386.69-9,234.54

Finding the Fourth Proportional to 20,923.38, 31,386.69 and 9,234.54

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Solution

The fourth proportional to 20,923.38, 31,386.69 and 9,234.54 is: 13,852.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.38 : 31,386.69 = 9,234.54 : x
  2. Step 2: Convert to fraction form
    20,923.38/31,386.69 = 9,234.54/x
  3. Step 3: Cross multiply
    20,923.38x = 31,386.69 × 9,234.54
  4. Step 4: Simplify right side
    20,923.38x = 289,841,644.27
  5. Step 5: Solve for x
    x = 289,841,644.27/20,923.38
  6. Step 6: Final answer
    x = 13,852.52

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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.