Home / 28,564.14-42,845.76-7,787.64

Finding the Fourth Proportional to 28,564.14, 42,845.76 and 7,787.64

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Solution

The fourth proportional to 28,564.14, 42,845.76 and 7,787.64 is: 11,681.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.14 : 42,845.76 = 7,787.64 : x
  2. Step 2: Convert to fraction form
    28,564.14/42,845.76 = 7,787.64/x
  3. Step 3: Cross multiply
    28,564.14x = 42,845.76 × 7,787.64
  4. Step 4: Simplify right side
    28,564.14x = 333,667,422.58
  5. Step 5: Solve for x
    x = 333,667,422.58/28,564.14
  6. Step 6: Final answer
    x = 11,681.34

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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.