Home / 15,279,705.72-21,086,004.78-8,404,710.84

Finding the Fourth Proportional to 15,279,705.72, 21,086,004.78 and 8,404,710.84

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Solution

The fourth proportional to 15,279,705.72, 21,086,004.78 and 8,404,710.84 is: 11,598,506.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279,705.72 : 21,086,004.78 = 8,404,710.84 : x
  2. Step 2: Convert to fraction form
    15,279,705.72/21,086,004.78 = 8,404,710.84/x
  3. Step 3: Cross multiply
    15,279,705.72x = 21,086,004.78 × 8,404,710.84
  4. Step 4: Simplify right side
    15,279,705.72x = 177,221,772,946,757.81
  5. Step 5: Solve for x
    x = 177,221,772,946,757.81/15,279,705.72
  6. Step 6: Final answer
    x = 11,598,506.95

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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.