Home / 39,760.96-54,867.36-21,855.52

Finding the Fourth Proportional to 39,760.96, 54,867.36 and 21,855.52

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Solution

The fourth proportional to 39,760.96, 54,867.36 and 21,855.52 is: 30,159.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,760.96 : 54,867.36 = 21,855.52 : x
  2. Step 2: Convert to fraction form
    39,760.96/54,867.36 = 21,855.52/x
  3. Step 3: Cross multiply
    39,760.96x = 54,867.36 × 21,855.52
  4. Step 4: Simplify right side
    39,760.96x = 1,199,154,683.83
  5. Step 5: Solve for x
    x = 1,199,154,683.83/39,760.96
  6. Step 6: Final answer
    x = 30,159.10

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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.