Home / 13,281.51-19,917.60-3,919.05

Finding the Fourth Proportional to 13,281.51, 19,917.60 and 3,919.05

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Solution

The fourth proportional to 13,281.51, 19,917.60 and 3,919.05 is: 5,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.51 : 19,917.60 = 3,919.05 : x
  2. Step 2: Convert to fraction form
    13,281.51/19,917.60 = 3,919.05/x
  3. Step 3: Cross multiply
    13,281.51x = 19,917.60 × 3,919.05
  4. Step 4: Simplify right side
    13,281.51x = 78,058,070.28
  5. Step 5: Solve for x
    x = 78,058,070.28/13,281.51
  6. Step 6: Final answer
    x = 5,877.20

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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.