Home / 20,173,100.34-30,259,546.46-7,878,311.22

Finding the Fourth Proportional to 20,173,100.34, 30,259,546.46 and 7,878,311.22

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Solution

The fourth proportional to 20,173,100.34, 30,259,546.46 and 7,878,311.22 is: 11,817,426.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,173,100.34 : 30,259,546.46 = 7,878,311.22 : x
  2. Step 2: Convert to fraction form
    20,173,100.34/30,259,546.46 = 7,878,311.22/x
  3. Step 3: Cross multiply
    20,173,100.34x = 30,259,546.46 × 7,878,311.22
  4. Step 4: Simplify right side
    20,173,100.34x = 238,394,124,387,929.28
  5. Step 5: Solve for x
    x = 238,394,124,387,929.28/20,173,100.34
  6. Step 6: Final answer
    x = 11,817,426.19

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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.