Home / 12,039.78-18,050.45-7,358.91

Finding the Fourth Proportional to 12,039.78, 18,050.45 and 7,358.91

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Solution

The fourth proportional to 12,039.78, 18,050.45 and 7,358.91 is: 11,032.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.78 : 18,050.45 = 7,358.91 : x
  2. Step 2: Convert to fraction form
    12,039.78/18,050.45 = 7,358.91/x
  3. Step 3: Cross multiply
    12,039.78x = 18,050.45 × 7,358.91
  4. Step 4: Simplify right side
    12,039.78x = 132,831,600.21
  5. Step 5: Solve for x
    x = 132,831,600.21/12,039.78
  6. Step 6: Final answer
    x = 11,032.73

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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.