Home / 20,881,921.80-31,324,374.72-8,739,158.34

Finding the Fourth Proportional to 20,881,921.80, 31,324,374.72 and 8,739,158.34

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Solution

The fourth proportional to 20,881,921.80, 31,324,374.72 and 8,739,158.34 is: 13,109,361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,921.80 : 31,324,374.72 = 8,739,158.34 : x
  2. Step 2: Convert to fraction form
    20,881,921.80/31,324,374.72 = 8,739,158.34/x
  3. Step 3: Cross multiply
    20,881,921.80x = 31,324,374.72 × 8,739,158.34
  4. Step 4: Simplify right side
    20,881,921.80x = 273,748,670,579,573.16
  5. Step 5: Solve for x
    x = 273,748,670,579,573.16/20,881,921.80
  6. Step 6: Final answer
    x = 13,109,361.93

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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.