Home / 13,191.78-19,785.84-3,330.45

Finding the Fourth Proportional to 13,191.78, 19,785.84 and 3,330.45

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Solution

The fourth proportional to 13,191.78, 19,785.84 and 3,330.45 is: 4,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.78 : 19,785.84 = 3,330.45 : x
  2. Step 2: Convert to fraction form
    13,191.78/19,785.84 = 3,330.45/x
  3. Step 3: Cross multiply
    13,191.78x = 19,785.84 × 3,330.45
  4. Step 4: Simplify right side
    13,191.78x = 65,895,750.83
  5. Step 5: Solve for x
    x = 65,895,750.83/13,191.78
  6. Step 6: Final answer
    x = 4,995.21

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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.