Home / 21,609.68-32,358.44-18,509.64

Finding the Fourth Proportional to 21,609.68, 32,358.44 and 18,509.64

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Solution

The fourth proportional to 21,609.68, 32,358.44 and 18,509.64 is: 27,716.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.68 : 32,358.44 = 18,509.64 : x
  2. Step 2: Convert to fraction form
    21,609.68/32,358.44 = 18,509.64/x
  3. Step 3: Cross multiply
    21,609.68x = 32,358.44 × 18,509.64
  4. Step 4: Simplify right side
    21,609.68x = 598,943,075.36
  5. Step 5: Solve for x
    x = 598,943,075.36/21,609.68
  6. Step 6: Final answer
    x = 27,716.43

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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.