Home / 21,339.92-29,449.44-11,780.28

Finding the Fourth Proportional to 21,339.92, 29,449.44 and 11,780.28

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Solution

The fourth proportional to 21,339.92, 29,449.44 and 11,780.28 is: 16,256.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.92 : 29,449.44 = 11,780.28 : x
  2. Step 2: Convert to fraction form
    21,339.92/29,449.44 = 11,780.28/x
  3. Step 3: Cross multiply
    21,339.92x = 29,449.44 × 11,780.28
  4. Step 4: Simplify right side
    21,339.92x = 346,922,649.04
  5. Step 5: Solve for x
    x = 346,922,649.04/21,339.92
  6. Step 6: Final answer
    x = 16,256.98

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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.