Home / 39,615.72-54,668.46-21,710.40

Finding the Fourth Proportional to 39,615.72, 54,668.46 and 21,710.40

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Solution

The fourth proportional to 39,615.72, 54,668.46 and 21,710.40 is: 29,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,615.72 : 54,668.46 = 21,710.40 : x
  2. Step 2: Convert to fraction form
    39,615.72/54,668.46 = 21,710.40/x
  3. Step 3: Cross multiply
    39,615.72x = 54,668.46 × 21,710.40
  4. Step 4: Simplify right side
    39,615.72x = 1,186,874,338.99
  5. Step 5: Solve for x
    x = 1,186,874,338.99/39,615.72
  6. Step 6: Final answer
    x = 29,959.68

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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.