Home / 21,269.36-31,922.48-21,220.16

Finding the Fourth Proportional to 21,269.36, 31,922.48 and 21,220.16

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Solution

The fourth proportional to 21,269.36, 31,922.48 and 21,220.16 is: 31,848.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.36 : 31,922.48 = 21,220.16 : x
  2. Step 2: Convert to fraction form
    21,269.36/31,922.48 = 21,220.16/x
  3. Step 3: Cross multiply
    21,269.36x = 31,922.48 × 21,220.16
  4. Step 4: Simplify right side
    21,269.36x = 677,399,867.48
  5. Step 5: Solve for x
    x = 677,399,867.48/21,269.36
  6. Step 6: Final answer
    x = 31,848.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.