Home / 39,681.84-54,760.78-21,777.14

Finding the Fourth Proportional to 39,681.84, 54,760.78 and 21,777.14

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Solution

The fourth proportional to 39,681.84, 54,760.78 and 21,777.14 is: 30,052.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.84 : 54,760.78 = 21,777.14 : x
  2. Step 2: Convert to fraction form
    39,681.84/54,760.78 = 21,777.14/x
  3. Step 3: Cross multiply
    39,681.84x = 54,760.78 × 21,777.14
  4. Step 4: Simplify right side
    39,681.84x = 1,192,533,336.69
  5. Step 5: Solve for x
    x = 1,192,533,336.69/39,681.84
  6. Step 6: Final answer
    x = 30,052.37

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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.