Home / 13,521.28-20,232.58-7,977.28

Finding the Fourth Proportional to 13,521.28, 20,232.58 and 7,977.28

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Solution

The fourth proportional to 13,521.28, 20,232.58 and 7,977.28 is: 11,936.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.28 : 20,232.58 = 7,977.28 : x
  2. Step 2: Convert to fraction form
    13,521.28/20,232.58 = 7,977.28/x
  3. Step 3: Cross multiply
    13,521.28x = 20,232.58 × 7,977.28
  4. Step 4: Simplify right side
    13,521.28x = 161,400,955.78
  5. Step 5: Solve for x
    x = 161,400,955.78/13,521.28
  6. Step 6: Final answer
    x = 11,936.81

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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.