Home / 39,900.51-55,063.10-21,996.17

Finding the Fourth Proportional to 39,900.51, 55,063.10 and 21,996.17

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Solution

The fourth proportional to 39,900.51, 55,063.10 and 21,996.17 is: 30,354.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900.51 : 55,063.10 = 21,996.17 : x
  2. Step 2: Convert to fraction form
    39,900.51/55,063.10 = 21,996.17/x
  3. Step 3: Cross multiply
    39,900.51x = 55,063.10 × 21,996.17
  4. Step 4: Simplify right side
    39,900.51x = 1,211,176,923.03
  5. Step 5: Solve for x
    x = 1,211,176,923.03/39,900.51
  6. Step 6: Final answer
    x = 30,354.92

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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.