Home / 12,671,991.60-19,007,987.40-8,640,913.20

Finding the Fourth Proportional to 12,671,991.60, 19,007,987.40 and 8,640,913.20

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Solution

The fourth proportional to 12,671,991.60, 19,007,987.40 and 8,640,913.20 is: 12,961,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671,991.60 : 19,007,987.40 = 8,640,913.20 : x
  2. Step 2: Convert to fraction form
    12,671,991.60/19,007,987.40 = 8,640,913.20/x
  3. Step 3: Cross multiply
    12,671,991.60x = 19,007,987.40 × 8,640,913.20
  4. Step 4: Simplify right side
    12,671,991.60x = 164,246,369,230,093.66
  5. Step 5: Solve for x
    x = 164,246,369,230,093.66/12,671,991.60
  6. Step 6: Final answer
    x = 12,961,369.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.