Home / 12,940.08-19,410.12-5,148.96

Finding the Fourth Proportional to 12,940.08, 19,410.12 and 5,148.96

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Solution

The fourth proportional to 12,940.08, 19,410.12 and 5,148.96 is: 7,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.08 : 19,410.12 = 5,148.96 : x
  2. Step 2: Convert to fraction form
    12,940.08/19,410.12 = 5,148.96/x
  3. Step 3: Cross multiply
    12,940.08x = 19,410.12 × 5,148.96
  4. Step 4: Simplify right side
    12,940.08x = 99,941,931.48
  5. Step 5: Solve for x
    x = 99,941,931.48/12,940.08
  6. Step 6: Final answer
    x = 7,723.44

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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.