Home / 13,746.21-18,974.34-9,778.83

Finding the Fourth Proportional to 13,746.21, 18,974.34 and 9,778.83

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Solution

The fourth proportional to 13,746.21, 18,974.34 and 9,778.83 is: 13,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.21 : 18,974.34 = 9,778.83 : x
  2. Step 2: Convert to fraction form
    13,746.21/18,974.34 = 9,778.83/x
  3. Step 3: Cross multiply
    13,746.21x = 18,974.34 × 9,778.83
  4. Step 4: Simplify right side
    13,746.21x = 185,546,845.22
  5. Step 5: Solve for x
    x = 185,546,845.22/13,746.21
  6. Step 6: Final answer
    x = 13,498.04

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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.