Home / 28,564.97-42,857.70-12,768.68

Finding the Fourth Proportional to 28,564.97, 42,857.70 and 12,768.68

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Solution

The fourth proportional to 28,564.97, 42,857.70 and 12,768.68 is: 19,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,564.97 : 42,857.70 = 12,768.68 : x
  2. Step 2: Convert to fraction form
    28,564.97/42,857.70 = 12,768.68/x
  3. Step 3: Cross multiply
    28,564.97x = 42,857.70 × 12,768.68
  4. Step 4: Simplify right side
    28,564.97x = 547,236,256.84
  5. Step 5: Solve for x
    x = 547,236,256.84/28,564.97
  6. Step 6: Final answer
    x = 19,157.60

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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.