Home / 21,292.32-31,724.52-20,100

Finding the Fourth Proportional to 21,292.32, 31,724.52 and 20,100

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Solution

The fourth proportional to 21,292.32, 31,724.52 and 20,100 is: 29,948.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.32 : 31,724.52 = 20,100 : x
  2. Step 2: Convert to fraction form
    21,292.32/31,724.52 = 20,100/x
  3. Step 3: Cross multiply
    21,292.32x = 31,724.52 × 20,100
  4. Step 4: Simplify right side
    21,292.32x = 637,662,852
  5. Step 5: Solve for x
    x = 637,662,852/21,292.32
  6. Step 6: Final answer
    x = 29,948.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.