Home / 20,215.62-30,322.35-5,424.30

Finding the Fourth Proportional to 20,215.62, 30,322.35 and 5,424.30

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Solution

The fourth proportional to 20,215.62, 30,322.35 and 5,424.30 is: 8,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.62 : 30,322.35 = 5,424.30 : x
  2. Step 2: Convert to fraction form
    20,215.62/30,322.35 = 5,424.30/x
  3. Step 3: Cross multiply
    20,215.62x = 30,322.35 × 5,424.30
  4. Step 4: Simplify right side
    20,215.62x = 164,477,523.11
  5. Step 5: Solve for x
    x = 164,477,523.11/20,215.62
  6. Step 6: Final answer
    x = 8,136.16

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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.