Home / 39,762.81-54,872.74-21,857.93

Finding the Fourth Proportional to 39,762.81, 54,872.74 and 21,857.93

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Solution

The fourth proportional to 39,762.81, 54,872.74 and 21,857.93 is: 30,163.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,762.81 : 54,872.74 = 21,857.93 : x
  2. Step 2: Convert to fraction form
    39,762.81/54,872.74 = 21,857.93/x
  3. Step 3: Cross multiply
    39,762.81x = 54,872.74 × 21,857.93
  4. Step 4: Simplify right side
    39,762.81x = 1,199,404,468.56
  5. Step 5: Solve for x
    x = 1,199,404,468.56/39,762.81
  6. Step 6: Final answer
    x = 30,163.98

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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.