Home / 13,380,051-18,462,903.91-7,872,214.49

Finding the Fourth Proportional to 13,380,051, 18,462,903.91 and 7,872,214.49

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Solution

The fourth proportional to 13,380,051, 18,462,903.91 and 7,872,214.49 is: 10,862,734.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380,051 : 18,462,903.91 = 7,872,214.49 : x
  2. Step 2: Convert to fraction form
    13,380,051/18,462,903.91 = 7,872,214.49/x
  3. Step 3: Cross multiply
    13,380,051x = 18,462,903.91 × 7,872,214.49
  4. Step 4: Simplify right side
    13,380,051x = 145,343,939,687,779.66
  5. Step 5: Solve for x
    x = 145,343,939,687,779.66/13,380,051
  6. Step 6: Final answer
    x = 10,862,734.36

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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.