Home / 20,639.52-31,009.92-13,247.04

Finding the Fourth Proportional to 20,639.52, 31,009.92 and 13,247.04

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Solution

The fourth proportional to 20,639.52, 31,009.92 and 13,247.04 is: 19,903.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.52 : 31,009.92 = 13,247.04 : x
  2. Step 2: Convert to fraction form
    20,639.52/31,009.92 = 13,247.04/x
  3. Step 3: Cross multiply
    20,639.52x = 31,009.92 × 13,247.04
  4. Step 4: Simplify right side
    20,639.52x = 410,789,650.64
  5. Step 5: Solve for x
    x = 410,789,650.64/20,639.52
  6. Step 6: Final answer
    x = 19,903.06

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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.