Home / 13,989.38-20,983.34-5,223.60

Finding the Fourth Proportional to 13,989.38, 20,983.34 and 5,223.60

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Solution

The fourth proportional to 13,989.38, 20,983.34 and 5,223.60 is: 7,835.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.38 : 20,983.34 = 5,223.60 : x
  2. Step 2: Convert to fraction form
    13,989.38/20,983.34 = 5,223.60/x
  3. Step 3: Cross multiply
    13,989.38x = 20,983.34 × 5,223.60
  4. Step 4: Simplify right side
    13,989.38x = 109,608,574.82
  5. Step 5: Solve for x
    x = 109,608,574.82/13,989.38
  6. Step 6: Final answer
    x = 7,835.13

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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.