Home / 12,880.93-19,314.75-7,617.55

Finding the Fourth Proportional to 12,880.93, 19,314.75 and 7,617.55

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Solution

The fourth proportional to 12,880.93, 19,314.75 and 7,617.55 is: 11,422.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.93 : 19,314.75 = 7,617.55 : x
  2. Step 2: Convert to fraction form
    12,880.93/19,314.75 = 7,617.55/x
  3. Step 3: Cross multiply
    12,880.93x = 19,314.75 × 7,617.55
  4. Step 4: Simplify right side
    12,880.93x = 147,131,025.58
  5. Step 5: Solve for x
    x = 147,131,025.58/12,880.93
  6. Step 6: Final answer
    x = 11,422.39

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Double scale
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Similar ratio
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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.