Home / 39,902.98-55,066.49-21,998.62

Finding the Fourth Proportional to 39,902.98, 55,066.49 and 21,998.62

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Solution

The fourth proportional to 39,902.98, 55,066.49 and 21,998.62 is: 30,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,902.98 : 55,066.49 = 21,998.62 : x
  2. Step 2: Convert to fraction form
    39,902.98/55,066.49 = 21,998.62/x
  3. Step 3: Cross multiply
    39,902.98x = 55,066.49 × 21,998.62
  4. Step 4: Simplify right side
    39,902.98x = 1,211,386,678.25
  5. Step 5: Solve for x
    x = 1,211,386,678.25/39,902.98
  6. Step 6: Final answer
    x = 30,358.30

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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.