Home / 39,716.69-54,809.40-21,812.06

Finding the Fourth Proportional to 39,716.69, 54,809.40 and 21,812.06

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Solution

The fourth proportional to 39,716.69, 54,809.40 and 21,812.06 is: 30,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,716.69 : 54,809.40 = 21,812.06 : x
  2. Step 2: Convert to fraction form
    39,716.69/54,809.40 = 21,812.06/x
  3. Step 3: Cross multiply
    39,716.69x = 54,809.40 × 21,812.06
  4. Step 4: Simplify right side
    39,716.69x = 1,195,506,140.18
  5. Step 5: Solve for x
    x = 1,195,506,140.18/39,716.69
  6. Step 6: Final answer
    x = 30,100.85

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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.