Home / 12,758.31-19,140.91-4,438.80

Finding the Fourth Proportional to 12,758.31, 19,140.91 and 4,438.80

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Solution

The fourth proportional to 12,758.31, 19,140.91 and 4,438.80 is: 6,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.31 : 19,140.91 = 4,438.80 : x
  2. Step 2: Convert to fraction form
    12,758.31/19,140.91 = 4,438.80/x
  3. Step 3: Cross multiply
    12,758.31x = 19,140.91 × 4,438.80
  4. Step 4: Simplify right side
    12,758.31x = 84,962,660.21
  5. Step 5: Solve for x
    x = 84,962,660.21/12,758.31
  6. Step 6: Final answer
    x = 6,659.40

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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.