Home / 20,334,768.61-28,061,878.71-11,042,255.68

Finding the Fourth Proportional to 20,334,768.61, 28,061,878.71 and 11,042,255.68

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Solution

The fourth proportional to 20,334,768.61, 28,061,878.71 and 11,042,255.68 is: 15,238,257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334,768.61 : 28,061,878.71 = 11,042,255.68 : x
  2. Step 2: Convert to fraction form
    20,334,768.61/28,061,878.71 = 11,042,255.68/x
  3. Step 3: Cross multiply
    20,334,768.61x = 28,061,878.71 × 11,042,255.68
  4. Step 4: Simplify right side
    20,334,768.61x = 309,866,439,576,968.56
  5. Step 5: Solve for x
    x = 309,866,439,576,968.56/20,334,768.61
  6. Step 6: Final answer
    x = 15,238,257.47

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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.