Home / 21,412.07-32,115.79-5,618.69

Finding the Fourth Proportional to 21,412.07, 32,115.79 and 5,618.69

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Solution

The fourth proportional to 21,412.07, 32,115.79 and 5,618.69 is: 8,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,412.07 : 32,115.79 = 5,618.69 : x
  2. Step 2: Convert to fraction form
    21,412.07/32,115.79 = 5,618.69/x
  3. Step 3: Cross multiply
    21,412.07x = 32,115.79 × 5,618.69
  4. Step 4: Simplify right side
    21,412.07x = 180,448,645.53
  5. Step 5: Solve for x
    x = 180,448,645.53/21,412.07
  6. Step 6: Final answer
    x = 8,427.43

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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.