Home / 12,675.43-19,006.79-3,909.20

Finding the Fourth Proportional to 12,675.43, 19,006.79 and 3,909.20

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Solution

The fourth proportional to 12,675.43, 19,006.79 and 3,909.20 is: 5,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.43 : 19,006.79 = 3,909.20 : x
  2. Step 2: Convert to fraction form
    12,675.43/19,006.79 = 3,909.20/x
  3. Step 3: Cross multiply
    12,675.43x = 19,006.79 × 3,909.20
  4. Step 4: Simplify right side
    12,675.43x = 74,301,343.47
  5. Step 5: Solve for x
    x = 74,301,343.47/12,675.43
  6. Step 6: Final answer
    x = 5,861.84

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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.