Home / 39,770.84-54,884.32-21,866.60

Finding the Fourth Proportional to 39,770.84, 54,884.32 and 21,866.60

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Solution

The fourth proportional to 39,770.84, 54,884.32 and 21,866.60 is: 30,176.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.84 : 54,884.32 = 21,866.60 : x
  2. Step 2: Convert to fraction form
    39,770.84/54,884.32 = 21,866.60/x
  3. Step 3: Cross multiply
    39,770.84x = 54,884.32 × 21,866.60
  4. Step 4: Simplify right side
    39,770.84x = 1,200,133,471.71
  5. Step 5: Solve for x
    x = 1,200,133,471.71/39,770.84
  6. Step 6: Final answer
    x = 30,176.22

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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.