Home / 20,834.96-31,253.90-7,688.24

Finding the Fourth Proportional to 20,834.96, 31,253.90 and 7,688.24

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Solution

The fourth proportional to 20,834.96, 31,253.90 and 7,688.24 is: 11,532.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.96 : 31,253.90 = 7,688.24 : x
  2. Step 2: Convert to fraction form
    20,834.96/31,253.90 = 7,688.24/x
  3. Step 3: Cross multiply
    20,834.96x = 31,253.90 × 7,688.24
  4. Step 4: Simplify right side
    20,834.96x = 240,287,484.14
  5. Step 5: Solve for x
    x = 240,287,484.14/20,834.96
  6. Step 6: Final answer
    x = 11,532.90

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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.