Home / 21,491.26-29,671.77-14,774.74

Finding the Fourth Proportional to 21,491.26, 29,671.77 and 14,774.74

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Solution

The fourth proportional to 21,491.26, 29,671.77 and 14,774.74 is: 20,398.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.26 : 29,671.77 = 14,774.74 : x
  2. Step 2: Convert to fraction form
    21,491.26/29,671.77 = 14,774.74/x
  3. Step 3: Cross multiply
    21,491.26x = 29,671.77 × 14,774.74
  4. Step 4: Simplify right side
    21,491.26x = 438,392,687.09
  5. Step 5: Solve for x
    x = 438,392,687.09/21,491.26
  6. Step 6: Final answer
    x = 20,398.65

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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.