Home / 28,389.76-42,299.36-26,800

Finding the Fourth Proportional to 28,389.76, 42,299.36 and 26,800

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Solution

The fourth proportional to 28,389.76, 42,299.36 and 26,800 is: 39,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.76 : 42,299.36 = 26,800 : x
  2. Step 2: Convert to fraction form
    28,389.76/42,299.36 = 26,800/x
  3. Step 3: Cross multiply
    28,389.76x = 42,299.36 × 26,800
  4. Step 4: Simplify right side
    28,389.76x = 1,133,622,848
  5. Step 5: Solve for x
    x = 1,133,622,848/28,389.76
  6. Step 6: Final answer
    x = 39,930.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.