Home / 13,220,369.44-18,231,430.92-8,505,953.22

Finding the Fourth Proportional to 13,220,369.44, 18,231,430.92 and 8,505,953.22

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Solution

The fourth proportional to 13,220,369.44, 18,231,430.92 and 8,505,953.22 is: 11,730,057.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220,369.44 : 18,231,430.92 = 8,505,953.22 : x
  2. Step 2: Convert to fraction form
    13,220,369.44/18,231,430.92 = 8,505,953.22/x
  3. Step 3: Cross multiply
    13,220,369.44x = 18,231,430.92 × 8,505,953.22
  4. Step 4: Simplify right side
    13,220,369.44x = 155,075,698,539,181.59
  5. Step 5: Solve for x
    x = 155,075,698,539,181.59/13,220,369.44
  6. Step 6: Final answer
    x = 11,730,057.87

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1.5x scale

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.