Home / 11,145.49-15,380.93-6,669.43

Finding the Fourth Proportional to 11,145.49, 15,380.93 and 6,669.43

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Solution

The fourth proportional to 11,145.49, 15,380.93 and 6,669.43 is: 9,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.49 : 15,380.93 = 6,669.43 : x
  2. Step 2: Convert to fraction form
    11,145.49/15,380.93 = 6,669.43/x
  3. Step 3: Cross multiply
    11,145.49x = 15,380.93 × 6,669.43
  4. Step 4: Simplify right side
    11,145.49x = 102,582,014.19
  5. Step 5: Solve for x
    x = 102,582,014.19/11,145.49
  6. Step 6: Final answer
    x = 9,203.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.