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Finding the Fourth Proportional to 12,483,751.40, 18,725,627.10 and 7,696,845.80

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Solution

The fourth proportional to 12,483,751.40, 18,725,627.10 and 7,696,845.80 is: 11,545,268.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483,751.40 : 18,725,627.10 = 7,696,845.80 : x
  2. Step 2: Convert to fraction form
    12,483,751.40/18,725,627.10 = 7,696,845.80/x
  3. Step 3: Cross multiply
    12,483,751.40x = 18,725,627.10 × 7,696,845.80
  4. Step 4: Simplify right side
    12,483,751.40x = 144,128,264,297,001.19
  5. Step 5: Solve for x
    x = 144,128,264,297,001.19/12,483,751.40
  6. Step 6: Final answer
    x = 11,545,268.70

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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.