Home / 20,923.50-31,389.87-6,887.85

Finding the Fourth Proportional to 20,923.50, 31,389.87 and 6,887.85

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Solution

The fourth proportional to 20,923.50, 31,389.87 and 6,887.85 is: 10,333.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.50 : 31,389.87 = 6,887.85 : x
  2. Step 2: Convert to fraction form
    20,923.50/31,389.87 = 6,887.85/x
  3. Step 3: Cross multiply
    20,923.50x = 31,389.87 × 6,887.85
  4. Step 4: Simplify right side
    20,923.50x = 216,208,624.20
  5. Step 5: Solve for x
    x = 216,208,624.20/20,923.50
  6. Step 6: Final answer
    x = 10,333.29

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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.