Home / 13,939.28-20,908.76-7,012.24

Finding the Fourth Proportional to 13,939.28, 20,908.76 and 7,012.24

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Solution

The fourth proportional to 13,939.28, 20,908.76 and 7,012.24 is: 10,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.28 : 20,908.76 = 7,012.24 : x
  2. Step 2: Convert to fraction form
    13,939.28/20,908.76 = 7,012.24/x
  3. Step 3: Cross multiply
    13,939.28x = 20,908.76 × 7,012.24
  4. Step 4: Simplify right side
    13,939.28x = 146,617,243.22
  5. Step 5: Solve for x
    x = 146,617,243.22/13,939.28
  6. Step 6: Final answer
    x = 10,518.28

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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.