Home / 39,902.36-55,065.62-21,998.00

Finding the Fourth Proportional to 39,902.36, 55,065.62 and 21,998.00

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Solution

The fourth proportional to 39,902.36, 55,065.62 and 21,998.00 is: 30,357.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902.36 : 55,065.62 = 21,998.00 : x
  2. Step 2: Convert to fraction form
    39,902.36/55,065.62 = 21,998.00/x
  3. Step 3: Cross multiply
    39,902.36x = 55,065.62 × 21,998.00
  4. Step 4: Simplify right side
    39,902.36x = 1,211,333,701.42
  5. Step 5: Solve for x
    x = 1,211,333,701.42/39,902.36
  6. Step 6: Final answer
    x = 30,357.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.