Home / 19,949.55-29,921.09-9,419.55

Finding the Fourth Proportional to 19,949.55, 29,921.09 and 9,419.55

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Solution

The fourth proportional to 19,949.55, 29,921.09 and 9,419.55 is: 14,127.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,949.55 : 29,921.09 = 9,419.55 : x
  2. Step 2: Convert to fraction form
    19,949.55/29,921.09 = 9,419.55/x
  3. Step 3: Cross multiply
    19,949.55x = 29,921.09 × 9,419.55
  4. Step 4: Simplify right side
    19,949.55x = 281,843,156.21
  5. Step 5: Solve for x
    x = 281,843,156.21/19,949.55
  6. Step 6: Final answer
    x = 14,127.80

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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.