Home / 13,929.87-20,900.28-6,133.22

Finding the Fourth Proportional to 13,929.87, 20,900.28 and 6,133.22

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Solution

The fourth proportional to 13,929.87, 20,900.28 and 6,133.22 is: 9,202.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.87 : 20,900.28 = 6,133.22 : x
  2. Step 2: Convert to fraction form
    13,929.87/20,900.28 = 6,133.22/x
  3. Step 3: Cross multiply
    13,929.87x = 20,900.28 × 6,133.22
  4. Step 4: Simplify right side
    13,929.87x = 128,185,977.68
  5. Step 5: Solve for x
    x = 128,185,977.68/13,929.87
  6. Step 6: Final answer
    x = 9,202.24

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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.