Home / 13,722.80-18,937.28-7,435.12

Finding the Fourth Proportional to 13,722.80, 18,937.28 and 7,435.12

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Solution

The fourth proportional to 13,722.80, 18,937.28 and 7,435.12 is: 10,260.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.80 : 18,937.28 = 7,435.12 : x
  2. Step 2: Convert to fraction form
    13,722.80/18,937.28 = 7,435.12/x
  3. Step 3: Cross multiply
    13,722.80x = 18,937.28 × 7,435.12
  4. Step 4: Simplify right side
    13,722.80x = 140,800,949.27
  5. Step 5: Solve for x
    x = 140,800,949.27/13,722.80
  6. Step 6: Final answer
    x = 10,260.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.