Home / 12,968,945,216.80-17,905,929,849.36-8,215,439,403.04

Finding the Fourth Proportional to 12,968,945,216.80, 17,905,929,849.36 and 8,215,439,403.04

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Solution

The fourth proportional to 12,968,945,216.80, 17,905,929,849.36 and 8,215,439,403.04 is: 11,342,871,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968,945,216.80 : 17,905,929,849.36 = 8,215,439,403.04 : x
  2. Step 2: Convert to fraction form
    12,968,945,216.80/17,905,929,849.36 = 8,215,439,403.04/x
  3. Step 3: Cross multiply
    12,968,945,216.80x = 17,905,929,849.36 × 8,215,439,403.04
  4. Step 4: Simplify right side
    12,968,945,216.80x = 147,105,081,632,502,235,136
  5. Step 5: Solve for x
    x = 147,105,081,632,502,235,136/12,968,945,216.80
  6. Step 6: Final answer
    x = 11,342,871,696.45

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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.