Home / 21,191,749.20-31,787,623.80-19,632,855.60

Finding the Fourth Proportional to 21,191,749.20, 31,787,623.80 and 19,632,855.60

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Solution

The fourth proportional to 21,191,749.20, 31,787,623.80 and 19,632,855.60 is: 29,449,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191,749.20 : 31,787,623.80 = 19,632,855.60 : x
  2. Step 2: Convert to fraction form
    21,191,749.20/31,787,623.80 = 19,632,855.60/x
  3. Step 3: Cross multiply
    21,191,749.20x = 31,787,623.80 × 19,632,855.60
  4. Step 4: Simplify right side
    21,191,749.20x = 624,081,827,932,523.38
  5. Step 5: Solve for x
    x = 624,081,827,932,523.38/21,191,749.20
  6. Step 6: Final answer
    x = 29,449,283.40

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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.