Home / 21,309,436.80-31,968,302.40-9,178,876.80

Finding the Fourth Proportional to 21,309,436.80, 31,968,302.40 and 9,178,876.80

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Solution

The fourth proportional to 21,309,436.80, 31,968,302.40 and 9,178,876.80 is: 13,770,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,436.80 : 31,968,302.40 = 9,178,876.80 : x
  2. Step 2: Convert to fraction form
    21,309,436.80/31,968,302.40 = 9,178,876.80/x
  3. Step 3: Cross multiply
    21,309,436.80x = 31,968,302.40 × 9,178,876.80
  4. Step 4: Simplify right side
    21,309,436.80x = 293,433,109,234,744.31
  5. Step 5: Solve for x
    x = 293,433,109,234,744.31/21,309,436.80
  6. Step 6: Final answer
    x = 13,770,101.57

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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.