Home / 21,623.36-29,843.36-20,289.12

Finding the Fourth Proportional to 21,623.36, 29,843.36 and 20,289.12

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Solution

The fourth proportional to 21,623.36, 29,843.36 and 20,289.12 is: 28,001.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.36 : 29,843.36 = 20,289.12 : x
  2. Step 2: Convert to fraction form
    21,623.36/29,843.36 = 20,289.12/x
  3. Step 3: Cross multiply
    21,623.36x = 29,843.36 × 20,289.12
  4. Step 4: Simplify right side
    21,623.36x = 605,495,512.24
  5. Step 5: Solve for x
    x = 605,495,512.24/21,623.36
  6. Step 6: Final answer
    x = 28,001.92

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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.