Home / 28,512.86-42,768.57-7,735.82

Finding the Fourth Proportional to 28,512.86, 42,768.57 and 7,735.82

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Solution

The fourth proportional to 28,512.86, 42,768.57 and 7,735.82 is: 11,603.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.86 : 42,768.57 = 7,735.82 : x
  2. Step 2: Convert to fraction form
    28,512.86/42,768.57 = 7,735.82/x
  3. Step 3: Cross multiply
    28,512.86x = 42,768.57 × 7,735.82
  4. Step 4: Simplify right side
    28,512.86x = 330,849,959.18
  5. Step 5: Solve for x
    x = 330,849,959.18/28,512.86
  6. Step 6: Final answer
    x = 11,603.53

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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.