Home / 20,732.70-31,111.20-7,586.40

Finding the Fourth Proportional to 20,732.70, 31,111.20 and 7,586.40

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Solution

The fourth proportional to 20,732.70, 31,111.20 and 7,586.40 is: 11,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.70 : 31,111.20 = 7,586.40 : x
  2. Step 2: Convert to fraction form
    20,732.70/31,111.20 = 7,586.40/x
  3. Step 3: Cross multiply
    20,732.70x = 31,111.20 × 7,586.40
  4. Step 4: Simplify right side
    20,732.70x = 236,022,007.68
  5. Step 5: Solve for x
    x = 236,022,007.68/20,732.70
  6. Step 6: Final answer
    x = 11,384.05

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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.