Home / 15,661,420.12-21,612,907.26-8,786,049.79

Finding the Fourth Proportional to 15,661,420.12, 21,612,907.26 and 8,786,049.79

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Solution

The fourth proportional to 15,661,420.12, 21,612,907.26 and 8,786,049.79 is: 12,124,831.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661,420.12 : 21,612,907.26 = 8,786,049.79 : x
  2. Step 2: Convert to fraction form
    15,661,420.12/21,612,907.26 = 8,786,049.79/x
  3. Step 3: Cross multiply
    15,661,420.12x = 21,612,907.26 × 8,786,049.79
  4. Step 4: Simplify right side
    15,661,420.12x = 189,892,079,293,012.47
  5. Step 5: Solve for x
    x = 189,892,079,293,012.47/15,661,420.12
  6. Step 6: Final answer
    x = 12,124,831.45

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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.