Home / 13,613,636.80-20,420,455.20-11,934,020.80

Finding the Fourth Proportional to 13,613,636.80, 20,420,455.20 and 11,934,020.80

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Solution

The fourth proportional to 13,613,636.80, 20,420,455.20 and 11,934,020.80 is: 17,901,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613,636.80 : 20,420,455.20 = 11,934,020.80 : x
  2. Step 2: Convert to fraction form
    13,613,636.80/20,420,455.20 = 11,934,020.80/x
  3. Step 3: Cross multiply
    13,613,636.80x = 20,420,455.20 × 11,934,020.80
  4. Step 4: Simplify right side
    13,613,636.80x = 243,698,137,102,268.16
  5. Step 5: Solve for x
    x = 243,698,137,102,268.16/13,613,636.80
  6. Step 6: Final answer
    x = 17,901,031.20

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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.