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Finding the Fourth Proportional to 28,435, 39,235.44 and 16,495.60

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Solution

The fourth proportional to 28,435, 39,235.44 and 16,495.60 is: 22,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435 : 39,235.44 = 16,495.60 : x
  2. Step 2: Convert to fraction form
    28,435/39,235.44 = 16,495.60/x
  3. Step 3: Cross multiply
    28,435x = 39,235.44 × 16,495.60
  4. Step 4: Simplify right side
    28,435x = 647,212,124.06
  5. Step 5: Solve for x
    x = 647,212,124.06/28,435
  6. Step 6: Final answer
    x = 22,761.11

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1.5x scale

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.