Home / 11,181.24-15,429.10-6,145.40

Finding the Fourth Proportional to 11,181.24, 15,429.10 and 6,145.40

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Solution

The fourth proportional to 11,181.24, 15,429.10 and 6,145.40 is: 8,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.24 : 15,429.10 = 6,145.40 : x
  2. Step 2: Convert to fraction form
    11,181.24/15,429.10 = 6,145.40/x
  3. Step 3: Cross multiply
    11,181.24x = 15,429.10 × 6,145.40
  4. Step 4: Simplify right side
    11,181.24x = 94,817,991.14
  5. Step 5: Solve for x
    x = 94,817,991.14/11,181.24
  6. Step 6: Final answer
    x = 8,480.10

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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.