Home / 12,127,984.40-18,191,976.60-7,345,015.40

Finding the Fourth Proportional to 12,127,984.40, 18,191,976.60 and 7,345,015.40

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Solution

The fourth proportional to 12,127,984.40, 18,191,976.60 and 7,345,015.40 is: 11,017,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,984.40 : 18,191,976.60 = 7,345,015.40 : x
  2. Step 2: Convert to fraction form
    12,127,984.40/18,191,976.60 = 7,345,015.40/x
  3. Step 3: Cross multiply
    12,127,984.40x = 18,191,976.60 × 7,345,015.40
  4. Step 4: Simplify right side
    12,127,984.40x = 133,620,348,283,439.66
  5. Step 5: Solve for x
    x = 133,620,348,283,439.66/12,127,984.40
  6. Step 6: Final answer
    x = 11,017,523.10

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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.