Home / 19,329.57-28,955.90-12,735.77

Finding the Fourth Proportional to 19,329.57, 28,955.90 and 12,735.77

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Solution

The fourth proportional to 19,329.57, 28,955.90 and 12,735.77 is: 19,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329.57 : 28,955.90 = 12,735.77 : x
  2. Step 2: Convert to fraction form
    19,329.57/28,955.90 = 12,735.77/x
  3. Step 3: Cross multiply
    19,329.57x = 28,955.90 × 12,735.77
  4. Step 4: Simplify right side
    19,329.57x = 368,775,569.60
  5. Step 5: Solve for x
    x = 368,775,569.60/19,329.57
  6. Step 6: Final answer
    x = 19,078.31

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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.