Home / 28,678.44-42,984.54-11,133.39

Finding the Fourth Proportional to 28,678.44, 42,984.54 and 11,133.39

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Solution

The fourth proportional to 28,678.44, 42,984.54 and 11,133.39 is: 16,687.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.44 : 42,984.54 = 11,133.39 : x
  2. Step 2: Convert to fraction form
    28,678.44/42,984.54 = 11,133.39/x
  3. Step 3: Cross multiply
    28,678.44x = 42,984.54 × 11,133.39
  4. Step 4: Simplify right side
    28,678.44x = 478,563,647.79
  5. Step 5: Solve for x
    x = 478,563,647.79/28,678.44
  6. Step 6: Final answer
    x = 16,687.23

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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.