Home / 13,380,052-18,462,905.30-7,872,215.48

Finding the Fourth Proportional to 13,380,052, 18,462,905.30 and 7,872,215.48

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Solution

The fourth proportional to 13,380,052, 18,462,905.30 and 7,872,215.48 is: 10,862,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380,052 : 18,462,905.30 = 7,872,215.48 : x
  2. Step 2: Convert to fraction form
    13,380,052/18,462,905.30 = 7,872,215.48/x
  3. Step 3: Cross multiply
    13,380,052x = 18,462,905.30 × 7,872,215.48
  4. Step 4: Simplify right side
    13,380,052x = 145,343,968,908,434.06
  5. Step 5: Solve for x
    x = 145,343,968,908,434.06/13,380,052
  6. Step 6: Final answer
    x = 10,862,735.73

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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.