Home / 13,390,720.70-18,481,213.59-8,166,761.24

Finding the Fourth Proportional to 13,390,720.70, 18,481,213.59 and 8,166,761.24

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Solution

The fourth proportional to 13,390,720.70, 18,481,213.59 and 8,166,761.24 is: 11,271,361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390,720.70 : 18,481,213.59 = 8,166,761.24 : x
  2. Step 2: Convert to fraction form
    13,390,720.70/18,481,213.59 = 8,166,761.24/x
  3. Step 3: Cross multiply
    13,390,720.70x = 18,481,213.59 × 8,166,761.24
  4. Step 4: Simplify right side
    13,390,720.70x = 150,931,658,814,973.25
  5. Step 5: Solve for x
    x = 150,931,658,814,973.25/13,390,720.70
  6. Step 6: Final answer
    x = 11,271,361.88

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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.