Home / 21,093.76-29,108.46-11,533.20

Finding the Fourth Proportional to 21,093.76, 29,108.46 and 11,533.20

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Solution

The fourth proportional to 21,093.76, 29,108.46 and 11,533.20 is: 15,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.76 : 29,108.46 = 11,533.20 : x
  2. Step 2: Convert to fraction form
    21,093.76/29,108.46 = 11,533.20/x
  3. Step 3: Cross multiply
    21,093.76x = 29,108.46 × 11,533.20
  4. Step 4: Simplify right side
    21,093.76x = 335,713,690.87
  5. Step 5: Solve for x
    x = 335,713,690.87/21,093.76
  6. Step 6: Final answer
    x = 15,915.31

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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.