Home / 11,438.28-17,127.32-9,205.20

Finding the Fourth Proportional to 11,438.28, 17,127.32 and 9,205.20

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Solution

The fourth proportional to 11,438.28, 17,127.32 and 9,205.20 is: 13,783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,438.28 : 17,127.32 = 9,205.20 : x
  2. Step 2: Convert to fraction form
    11,438.28/17,127.32 = 9,205.20/x
  3. Step 3: Cross multiply
    11,438.28x = 17,127.32 × 9,205.20
  4. Step 4: Simplify right side
    11,438.28x = 157,660,406.06
  5. Step 5: Solve for x
    x = 157,660,406.06/11,438.28
  6. Step 6: Final answer
    x = 13,783.58

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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.