Home / 19,921.36-29,870.54-11,924.12

Finding the Fourth Proportional to 19,921.36, 29,870.54 and 11,924.12

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Solution

The fourth proportional to 19,921.36, 29,870.54 and 11,924.12 is: 17,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.36 : 29,870.54 = 11,924.12 : x
  2. Step 2: Convert to fraction form
    19,921.36/29,870.54 = 11,924.12/x
  3. Step 3: Cross multiply
    19,921.36x = 29,870.54 × 11,924.12
  4. Step 4: Simplify right side
    19,921.36x = 356,179,903.42
  5. Step 5: Solve for x
    x = 356,179,903.42/19,921.36
  6. Step 6: Final answer
    x = 17,879.30

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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.