Home / 39,681.87-54,762.56-21,777.51

Finding the Fourth Proportional to 39,681.87, 54,762.56 and 21,777.51

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Solution

The fourth proportional to 39,681.87, 54,762.56 and 21,777.51 is: 30,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.87 : 54,762.56 = 21,777.51 : x
  2. Step 2: Convert to fraction form
    39,681.87/54,762.56 = 21,777.51/x
  3. Step 3: Cross multiply
    39,681.87x = 54,762.56 × 21,777.51
  4. Step 4: Simplify right side
    39,681.87x = 1,192,592,089.14
  5. Step 5: Solve for x
    x = 1,192,592,089.14/39,681.87
  6. Step 6: Final answer
    x = 30,053.83

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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.