Home / 15,776,815.90-21,771,564.15-8,901,937.66

Finding the Fourth Proportional to 15,776,815.90, 21,771,564.15 and 8,901,937.66

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Solution

The fourth proportional to 15,776,815.90, 21,771,564.15 and 8,901,937.66 is: 12,284,424.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776,815.90 : 21,771,564.15 = 8,901,937.66 : x
  2. Step 2: Convert to fraction form
    15,776,815.90/21,771,564.15 = 8,901,937.66/x
  3. Step 3: Cross multiply
    15,776,815.90x = 21,771,564.15 × 8,901,937.66
  4. Step 4: Simplify right side
    15,776,815.90x = 193,809,106,823,990.88
  5. Step 5: Solve for x
    x = 193,809,106,823,990.88/15,776,815.90
  6. Step 6: Final answer
    x = 12,284,424.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.