Home / 21,069.16-31,636.62-20,134.36

Finding the Fourth Proportional to 21,069.16, 31,636.62 and 20,134.36

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Solution

The fourth proportional to 21,069.16, 31,636.62 and 20,134.36 is: 30,232.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.16 : 31,636.62 = 20,134.36 : x
  2. Step 2: Convert to fraction form
    21,069.16/31,636.62 = 20,134.36/x
  3. Step 3: Cross multiply
    21,069.16x = 31,636.62 × 20,134.36
  4. Step 4: Simplify right side
    21,069.16x = 636,983,096.26
  5. Step 5: Solve for x
    x = 636,983,096.26/21,069.16
  6. Step 6: Final answer
    x = 30,232.96

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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.