Home / 39,784.62-54,904.20-21,881.02

Finding the Fourth Proportional to 39,784.62, 54,904.20 and 21,881.02

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Solution

The fourth proportional to 39,784.62, 54,904.20 and 21,881.02 is: 30,196.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.62 : 54,904.20 = 21,881.02 : x
  2. Step 2: Convert to fraction form
    39,784.62/54,904.20 = 21,881.02/x
  3. Step 3: Cross multiply
    39,784.62x = 54,904.20 × 21,881.02
  4. Step 4: Simplify right side
    39,784.62x = 1,201,359,898.28
  5. Step 5: Solve for x
    x = 1,201,359,898.28/39,784.62
  6. Step 6: Final answer
    x = 30,196.59

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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.