Home / 39,615.24-54,668.16-21,709.86

Finding the Fourth Proportional to 39,615.24, 54,668.16 and 21,709.86

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Solution

The fourth proportional to 39,615.24, 54,668.16 and 21,709.86 is: 29,959.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,615.24 : 54,668.16 = 21,709.86 : x
  2. Step 2: Convert to fraction form
    39,615.24/54,668.16 = 21,709.86/x
  3. Step 3: Cross multiply
    39,615.24x = 54,668.16 × 21,709.86
  4. Step 4: Simplify right side
    39,615.24x = 1,186,838,100.06
  5. Step 5: Solve for x
    x = 1,186,838,100.06/39,615.24
  6. Step 6: Final answer
    x = 29,959.13

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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.