Home / 21,263.94-31,830.30-19,449.54

Finding the Fourth Proportional to 21,263.94, 31,830.30 and 19,449.54

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Solution

The fourth proportional to 21,263.94, 31,830.30 and 19,449.54 is: 29,114.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.94 : 31,830.30 = 19,449.54 : x
  2. Step 2: Convert to fraction form
    21,263.94/31,830.30 = 19,449.54/x
  3. Step 3: Cross multiply
    21,263.94x = 31,830.30 × 19,449.54
  4. Step 4: Simplify right side
    21,263.94x = 619,084,693.06
  5. Step 5: Solve for x
    x = 619,084,693.06/21,263.94
  6. Step 6: Final answer
    x = 29,114.30

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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.