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Finding the Fourth Proportional to 12,768,792.48, 17,620,978.14 and 6,967,702.08

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Solution

The fourth proportional to 12,768,792.48, 17,620,978.14 and 6,967,702.08 is: 9,615,453.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768,792.48 : 17,620,978.14 = 6,967,702.08 : x
  2. Step 2: Convert to fraction form
    12,768,792.48/17,620,978.14 = 6,967,702.08/x
  3. Step 3: Cross multiply
    12,768,792.48x = 17,620,978.14 × 6,967,702.08
  4. Step 4: Simplify right side
    12,768,792.48x = 122,777,726,037,712.53
  5. Step 5: Solve for x
    x = 122,777,726,037,712.53/12,768,792.48
  6. Step 6: Final answer
    x = 9,615,453.16

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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.