Home / 12,820.19-19,229.40-6,161.45

Finding the Fourth Proportional to 12,820.19, 19,229.40 and 6,161.45

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Solution

The fourth proportional to 12,820.19, 19,229.40 and 6,161.45 is: 9,241.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,820.19 : 19,229.40 = 6,161.45 : x
  2. Step 2: Convert to fraction form
    12,820.19/19,229.40 = 6,161.45/x
  3. Step 3: Cross multiply
    12,820.19x = 19,229.40 × 6,161.45
  4. Step 4: Simplify right side
    12,820.19x = 118,480,890.48
  5. Step 5: Solve for x
    x = 118,480,890.48/12,820.19
  6. Step 6: Final answer
    x = 9,241.75

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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.