Home / 12,057.16-18,045.60-9,119.28

Finding the Fourth Proportional to 12,057.16, 18,045.60 and 9,119.28

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Solution

The fourth proportional to 12,057.16, 18,045.60 and 9,119.28 is: 13,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,057.16 : 18,045.60 = 9,119.28 : x
  2. Step 2: Convert to fraction form
    12,057.16/18,045.60 = 9,119.28/x
  3. Step 3: Cross multiply
    12,057.16x = 18,045.60 × 9,119.28
  4. Step 4: Simplify right side
    12,057.16x = 164,562,879.17
  5. Step 5: Solve for x
    x = 164,562,879.17/12,057.16
  6. Step 6: Final answer
    x = 13,648.56

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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.