Home / 13,288,161.08-18,340,040.30-7,781,214.42

Finding the Fourth Proportional to 13,288,161.08, 18,340,040.30 and 7,781,214.42

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Solution

The fourth proportional to 13,288,161.08, 18,340,040.30 and 7,781,214.42 is: 10,739,468.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,161.08 : 18,340,040.30 = 7,781,214.42 : x
  2. Step 2: Convert to fraction form
    13,288,161.08/18,340,040.30 = 7,781,214.42/x
  3. Step 3: Cross multiply
    13,288,161.08x = 18,340,040.30 × 7,781,214.42
  4. Step 4: Simplify right side
    13,288,161.08x = 142,707,786,045,741.12
  5. Step 5: Solve for x
    x = 142,707,786,045,741.12/13,288,161.08
  6. Step 6: Final answer
    x = 10,739,468.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.