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Finding the Fourth Proportional to 43,703.90, 65,556.21 and 12,540.14

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Solution

The fourth proportional to 43,703.90, 65,556.21 and 12,540.14 is: 18,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,703.90 : 65,556.21 = 12,540.14 : x
  2. Step 2: Convert to fraction form
    43,703.90/65,556.21 = 12,540.14/x
  3. Step 3: Cross multiply
    43,703.90x = 65,556.21 × 12,540.14
  4. Step 4: Simplify right side
    43,703.90x = 822,084,051.27
  5. Step 5: Solve for x
    x = 822,084,051.27/43,703.90
  6. Step 6: Final answer
    x = 18,810.31

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1.5x scale

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.