Home / 11,555.10-17,371.32-9,119.28

Finding the Fourth Proportional to 11,555.10, 17,371.32 and 9,119.28

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Solution

The fourth proportional to 11,555.10, 17,371.32 and 9,119.28 is: 13,709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.10 : 17,371.32 = 9,119.28 : x
  2. Step 2: Convert to fraction form
    11,555.10/17,371.32 = 9,119.28/x
  3. Step 3: Cross multiply
    11,555.10x = 17,371.32 × 9,119.28
  4. Step 4: Simplify right side
    11,555.10x = 158,413,931.05
  5. Step 5: Solve for x
    x = 158,413,931.05/11,555.10
  6. Step 6: Final answer
    x = 13,709.44

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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.