Home / 13,122.15-19,686.72-6,880.47

Finding the Fourth Proportional to 13,122.15, 19,686.72 and 6,880.47

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Solution

The fourth proportional to 13,122.15, 19,686.72 and 6,880.47 is: 10,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.15 : 19,686.72 = 6,880.47 : x
  2. Step 2: Convert to fraction form
    13,122.15/19,686.72 = 6,880.47/x
  3. Step 3: Cross multiply
    13,122.15x = 19,686.72 × 6,880.47
  4. Step 4: Simplify right side
    13,122.15x = 135,453,874.35
  5. Step 5: Solve for x
    x = 135,453,874.35/13,122.15
  6. Step 6: Final answer
    x = 10,322.54

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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.