Home / 20,228.35-30,331.54-9,122.04

Finding the Fourth Proportional to 20,228.35, 30,331.54 and 9,122.04

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Solution

The fourth proportional to 20,228.35, 30,331.54 and 9,122.04 is: 13,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228.35 : 30,331.54 = 9,122.04 : x
  2. Step 2: Convert to fraction form
    20,228.35/30,331.54 = 9,122.04/x
  3. Step 3: Cross multiply
    20,228.35x = 30,331.54 × 9,122.04
  4. Step 4: Simplify right side
    20,228.35x = 276,685,521.14
  5. Step 5: Solve for x
    x = 276,685,521.14/20,228.35
  6. Step 6: Final answer
    x = 13,678.11

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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.