Home / 39,713.82-54,802.35-21,809.99

Finding the Fourth Proportional to 39,713.82, 54,802.35 and 21,809.99

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Solution

The fourth proportional to 39,713.82, 54,802.35 and 21,809.99 is: 30,096.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,713.82 : 54,802.35 = 21,809.99 : x
  2. Step 2: Convert to fraction form
    39,713.82/54,802.35 = 21,809.99/x
  3. Step 3: Cross multiply
    39,713.82x = 54,802.35 × 21,809.99
  4. Step 4: Simplify right side
    39,713.82x = 1,195,238,431.46
  5. Step 5: Solve for x
    x = 1,195,238,431.46/39,713.82
  6. Step 6: Final answer
    x = 30,096.28

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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.