Home / 12,889.55-19,330.20-4,122.38

Finding the Fourth Proportional to 12,889.55, 19,330.20 and 4,122.38

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Solution

The fourth proportional to 12,889.55, 19,330.20 and 4,122.38 is: 6,182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.55 : 19,330.20 = 4,122.38 : x
  2. Step 2: Convert to fraction form
    12,889.55/19,330.20 = 4,122.38/x
  3. Step 3: Cross multiply
    12,889.55x = 19,330.20 × 4,122.38
  4. Step 4: Simplify right side
    12,889.55x = 79,686,333.23
  5. Step 5: Solve for x
    x = 79,686,333.23/12,889.55
  6. Step 6: Final answer
    x = 6,182.25

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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.