Home / 13,191.84-19,774.80-5,406.12

Finding the Fourth Proportional to 13,191.84, 19,774.80 and 5,406.12

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Solution

The fourth proportional to 13,191.84, 19,774.80 and 5,406.12 is: 8,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.84 : 19,774.80 = 5,406.12 : x
  2. Step 2: Convert to fraction form
    13,191.84/19,774.80 = 5,406.12/x
  3. Step 3: Cross multiply
    13,191.84x = 19,774.80 × 5,406.12
  4. Step 4: Simplify right side
    13,191.84x = 106,904,941.78
  5. Step 5: Solve for x
    x = 106,904,941.78/13,191.84
  6. Step 6: Final answer
    x = 8,103.87

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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.