Home / 13,168,530,642.72-18,187,654,569.12-8,672,507,940

Finding the Fourth Proportional to 13,168,530,642.72, 18,187,654,569.12 and 8,672,507,940

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Solution

The fourth proportional to 13,168,530,642.72, 18,187,654,569.12 and 8,672,507,940 is: 11,977,993,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168,530,642.72 : 18,187,654,569.12 = 8,672,507,940 : x
  2. Step 2: Convert to fraction form
    13,168,530,642.72/18,187,654,569.12 = 8,672,507,940/x
  3. Step 3: Cross multiply
    13,168,530,642.72x = 18,187,654,569.12 × 8,672,507,940
  4. Step 4: Simplify right side
    13,168,530,642.72x = 157,732,578,660,670,472,192
  5. Step 5: Solve for x
    x = 157,732,578,660,670,472,192/13,168,530,642.72
  6. Step 6: Final answer
    x = 11,977,993,820.28

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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.