Home / 12,478,631.10-18,724,167.45-7,091,418.30

Finding the Fourth Proportional to 12,478,631.10, 18,724,167.45 and 7,091,418.30

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Solution

The fourth proportional to 12,478,631.10, 18,724,167.45 and 7,091,418.30 is: 10,640,662.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,631.10 : 18,724,167.45 = 7,091,418.30 : x
  2. Step 2: Convert to fraction form
    12,478,631.10/18,724,167.45 = 7,091,418.30/x
  3. Step 3: Cross multiply
    12,478,631.10x = 18,724,167.45 × 7,091,418.30
  4. Step 4: Simplify right side
    12,478,631.10x = 132,780,903,707,194.33
  5. Step 5: Solve for x
    x = 132,780,903,707,194.33/12,478,631.10
  6. Step 6: Final answer
    x = 10,640,662.64

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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.