Home / 27,981,835.20-38,613,913.04-15,591,288.32

Finding the Fourth Proportional to 27,981,835.20, 38,613,913.04 and 15,591,288.32

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Solution

The fourth proportional to 27,981,835.20, 38,613,913.04 and 15,591,288.32 is: 21,515,409.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981,835.20 : 38,613,913.04 = 15,591,288.32 : x
  2. Step 2: Convert to fraction form
    27,981,835.20/38,613,913.04 = 15,591,288.32/x
  3. Step 3: Cross multiply
    27,981,835.20x = 38,613,913.04 × 15,591,288.32
  4. Step 4: Simplify right side
    27,981,835.20x = 602,040,651,370,047.75
  5. Step 5: Solve for x
    x = 602,040,651,370,047.75/27,981,835.20
  6. Step 6: Final answer
    x = 21,515,409.80

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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.