Home / 21,470.26-29,613.97-20,747.74

Finding the Fourth Proportional to 21,470.26, 29,613.97 and 20,747.74

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Solution

The fourth proportional to 21,470.26, 29,613.97 and 20,747.74 is: 28,617.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.26 : 29,613.97 = 20,747.74 : x
  2. Step 2: Convert to fraction form
    21,470.26/29,613.97 = 20,747.74/x
  3. Step 3: Cross multiply
    21,470.26x = 29,613.97 × 20,747.74
  4. Step 4: Simplify right side
    21,470.26x = 614,422,898.06
  5. Step 5: Solve for x
    x = 614,422,898.06/21,470.26
  6. Step 6: Final answer
    x = 28,617.39

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1.5x scale

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.