Home / 15,729,667.20-21,701,701.44-12,824,052.48

Finding the Fourth Proportional to 15,729,667.20, 21,701,701.44 and 12,824,052.48

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Solution

The fourth proportional to 15,729,667.20, 21,701,701.44 and 12,824,052.48 is: 17,692,920.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729,667.20 : 21,701,701.44 = 12,824,052.48 : x
  2. Step 2: Convert to fraction form
    15,729,667.20/21,701,701.44 = 12,824,052.48/x
  3. Step 3: Cross multiply
    15,729,667.20x = 21,701,701.44 × 12,824,052.48
  4. Step 4: Simplify right side
    15,729,667.20x = 278,303,758,171,851.59
  5. Step 5: Solve for x
    x = 278,303,758,171,851.59/15,729,667.20
  6. Step 6: Final answer
    x = 17,692,920.94

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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.