Home / 12,757.80-19,136.70-9,647.40

Finding the Fourth Proportional to 12,757.80, 19,136.70 and 9,647.40

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Solution

The fourth proportional to 12,757.80, 19,136.70 and 9,647.40 is: 14,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,757.80 : 19,136.70 = 9,647.40 : x
  2. Step 2: Convert to fraction form
    12,757.80/19,136.70 = 9,647.40/x
  3. Step 3: Cross multiply
    12,757.80x = 19,136.70 × 9,647.40
  4. Step 4: Simplify right side
    12,757.80x = 184,619,399.58
  5. Step 5: Solve for x
    x = 184,619,399.58/12,757.80
  6. Step 6: Final answer
    x = 14,471.10

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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.