Home / 13,765,644.88-20,648,430.32-5,129,548.78

Finding the Fourth Proportional to 13,765,644.88, 20,648,430.32 and 5,129,548.78

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Solution

The fourth proportional to 13,765,644.88, 20,648,430.32 and 5,129,548.78 is: 7,694,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765,644.88 : 20,648,430.32 = 5,129,548.78 : x
  2. Step 2: Convert to fraction form
    13,765,644.88/20,648,430.32 = 5,129,548.78/x
  3. Step 3: Cross multiply
    13,765,644.88x = 20,648,430.32 × 5,129,548.78
  4. Step 4: Simplify right side
    13,765,644.88x = 105,917,130,518,073.81
  5. Step 5: Solve for x
    x = 105,917,130,518,073.81/13,765,644.88
  6. Step 6: Final answer
    x = 7,694,309.38

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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.