Home / 13,009,912.22-17,953,699.96-7,128,611.82

Finding the Fourth Proportional to 13,009,912.22, 17,953,699.96 and 7,128,611.82

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Solution

The fourth proportional to 13,009,912.22, 17,953,699.96 and 7,128,611.82 is: 9,837,495.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009,912.22 : 17,953,699.96 = 7,128,611.82 : x
  2. Step 2: Convert to fraction form
    13,009,912.22/17,953,699.96 = 7,128,611.82/x
  3. Step 3: Cross multiply
    13,009,912.22x = 17,953,699.96 × 7,128,611.82
  4. Step 4: Simplify right side
    13,009,912.22x = 127,984,957,763,431.19
  5. Step 5: Solve for x
    x = 127,984,957,763,431.19/13,009,912.22
  6. Step 6: Final answer
    x = 9,837,495.88

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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.