Home / 21,470.42-29,627.70-11,909.93

Finding the Fourth Proportional to 21,470.42, 29,627.70 and 11,909.93

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Solution

The fourth proportional to 21,470.42, 29,627.70 and 11,909.93 is: 16,434.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.42 : 29,627.70 = 11,909.93 : x
  2. Step 2: Convert to fraction form
    21,470.42/29,627.70 = 11,909.93/x
  3. Step 3: Cross multiply
    21,470.42x = 29,627.70 × 11,909.93
  4. Step 4: Simplify right side
    21,470.42x = 352,863,833.06
  5. Step 5: Solve for x
    x = 352,863,833.06/21,470.42
  6. Step 6: Final answer
    x = 16,434.88

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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.