Home / 13,280.32-19,917.16-3,918.48

Finding the Fourth Proportional to 13,280.32, 19,917.16 and 3,918.48

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Solution

The fourth proportional to 13,280.32, 19,917.16 and 3,918.48 is: 5,876.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.32 : 19,917.16 = 3,918.48 : x
  2. Step 2: Convert to fraction form
    13,280.32/19,917.16 = 3,918.48/x
  3. Step 3: Cross multiply
    13,280.32x = 19,917.16 × 3,918.48
  4. Step 4: Simplify right side
    13,280.32x = 78,044,993.12
  5. Step 5: Solve for x
    x = 78,044,993.12/13,280.32
  6. Step 6: Final answer
    x = 5,876.74

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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.