Home / 15,378,379.74-21,221,930.82-8,409,079.53

Finding the Fourth Proportional to 15,378,379.74, 21,221,930.82 and 8,409,079.53

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Solution

The fourth proportional to 15,378,379.74, 21,221,930.82 and 8,409,079.53 is: 11,604,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378,379.74 : 21,221,930.82 = 8,409,079.53 : x
  2. Step 2: Convert to fraction form
    15,378,379.74/21,221,930.82 = 8,409,079.53/x
  3. Step 3: Cross multiply
    15,378,379.74x = 21,221,930.82 × 8,409,079.53
  4. Step 4: Simplify right side
    15,378,379.74x = 178,456,904,045,538.09
  5. Step 5: Solve for x
    x = 178,456,904,045,538.09/15,378,379.74
  6. Step 6: Final answer
    x = 11,604,402.22

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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.