Home / 12,750.21-19,155.39-7,498.68

Finding the Fourth Proportional to 12,750.21, 19,155.39 and 7,498.68

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Solution

The fourth proportional to 12,750.21, 19,155.39 and 7,498.68 is: 11,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.21 : 19,155.39 = 7,498.68 : x
  2. Step 2: Convert to fraction form
    12,750.21/19,155.39 = 7,498.68/x
  3. Step 3: Cross multiply
    12,750.21x = 19,155.39 × 7,498.68
  4. Step 4: Simplify right side
    12,750.21x = 143,640,039.93
  5. Step 5: Solve for x
    x = 143,640,039.93/12,750.21
  6. Step 6: Final answer
    x = 11,265.70

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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.