Home / 12,928.68-19,388.16-10,187.64

Finding the Fourth Proportional to 12,928.68, 19,388.16 and 10,187.64

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Solution

The fourth proportional to 12,928.68, 19,388.16 and 10,187.64 is: 15,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.68 : 19,388.16 = 10,187.64 : x
  2. Step 2: Convert to fraction form
    12,928.68/19,388.16 = 10,187.64/x
  3. Step 3: Cross multiply
    12,928.68x = 19,388.16 × 10,187.64
  4. Step 4: Simplify right side
    12,928.68x = 197,519,594.34
  5. Step 5: Solve for x
    x = 197,519,594.34/12,928.68
  6. Step 6: Final answer
    x = 15,277.63

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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.