Home / 12,775.60-19,163.40-9,319.60

Finding the Fourth Proportional to 12,775.60, 19,163.40 and 9,319.60

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Solution

The fourth proportional to 12,775.60, 19,163.40 and 9,319.60 is: 13,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.60 : 19,163.40 = 9,319.60 : x
  2. Step 2: Convert to fraction form
    12,775.60/19,163.40 = 9,319.60/x
  3. Step 3: Cross multiply
    12,775.60x = 19,163.40 × 9,319.60
  4. Step 4: Simplify right side
    12,775.60x = 178,595,222.64
  5. Step 5: Solve for x
    x = 178,595,222.64/12,775.60
  6. Step 6: Final answer
    x = 13,979.40

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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.