Home / 19,909.68-29,919.23-18,609.36

Finding the Fourth Proportional to 19,909.68, 29,919.23 and 18,609.36

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Solution

The fourth proportional to 19,909.68, 29,919.23 and 18,609.36 is: 27,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.68 : 29,919.23 = 18,609.36 : x
  2. Step 2: Convert to fraction form
    19,909.68/29,919.23 = 18,609.36/x
  3. Step 3: Cross multiply
    19,909.68x = 29,919.23 × 18,609.36
  4. Step 4: Simplify right side
    19,909.68x = 556,777,628.95
  5. Step 5: Solve for x
    x = 556,777,628.95/19,909.68
  6. Step 6: Final answer
    x = 27,965.17

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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.