Home / 21,490.26-29,670.39-14,773.74

Finding the Fourth Proportional to 21,490.26, 29,670.39 and 14,773.74

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Solution

The fourth proportional to 21,490.26, 29,670.39 and 14,773.74 is: 20,397.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.26 : 29,670.39 = 14,773.74 : x
  2. Step 2: Convert to fraction form
    21,490.26/29,670.39 = 14,773.74/x
  3. Step 3: Cross multiply
    21,490.26x = 29,670.39 × 14,773.74
  4. Step 4: Simplify right side
    21,490.26x = 438,342,627.56
  5. Step 5: Solve for x
    x = 438,342,627.56/21,490.26
  6. Step 6: Final answer
    x = 20,397.27

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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.