Home / 13,749,006.80-18,982,255.56-12,455,080.40

Finding the Fourth Proportional to 13,749,006.80, 18,982,255.56 and 12,455,080.40

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Solution

The fourth proportional to 13,749,006.80, 18,982,255.56 and 12,455,080.40 is: 17,195,825.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749,006.80 : 18,982,255.56 = 12,455,080.40 : x
  2. Step 2: Convert to fraction form
    13,749,006.80/18,982,255.56 = 12,455,080.40/x
  3. Step 3: Cross multiply
    13,749,006.80x = 18,982,255.56 × 12,455,080.40
  4. Step 4: Simplify right side
    13,749,006.80x = 236,425,519,173,147
  5. Step 5: Solve for x
    x = 236,425,519,173,147/13,749,006.80
  6. Step 6: Final answer
    x = 17,195,825.31

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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.