Home / 13,142.23-19,709.11-4,374.79

Finding the Fourth Proportional to 13,142.23, 19,709.11 and 4,374.79

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Solution

The fourth proportional to 13,142.23, 19,709.11 and 4,374.79 is: 6,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.23 : 19,709.11 = 4,374.79 : x
  2. Step 2: Convert to fraction form
    13,142.23/19,709.11 = 4,374.79/x
  3. Step 3: Cross multiply
    13,142.23x = 19,709.11 × 4,374.79
  4. Step 4: Simplify right side
    13,142.23x = 86,223,217.34
  5. Step 5: Solve for x
    x = 86,223,217.34/13,142.23
  6. Step 6: Final answer
    x = 6,560.78

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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.