Home / 12,828,211.20-19,242,316.80-11,977,905.60

Finding the Fourth Proportional to 12,828,211.20, 19,242,316.80 and 11,977,905.60

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Solution

The fourth proportional to 12,828,211.20, 19,242,316.80 and 11,977,905.60 is: 17,966,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,828,211.20 : 19,242,316.80 = 11,977,905.60 : x
  2. Step 2: Convert to fraction form
    12,828,211.20/19,242,316.80 = 11,977,905.60/x
  3. Step 3: Cross multiply
    12,828,211.20x = 19,242,316.80 × 11,977,905.60
  4. Step 4: Simplify right side
    12,828,211.20x = 230,482,654,155,694.09
  5. Step 5: Solve for x
    x = 230,482,654,155,694.09/12,828,211.20
  6. Step 6: Final answer
    x = 17,966,858.40

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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.