Home / 28,056.72-42,109.60-11,425.84

Finding the Fourth Proportional to 28,056.72, 42,109.60 and 11,425.84

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Solution

The fourth proportional to 28,056.72, 42,109.60 and 11,425.84 is: 17,148.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.72 : 42,109.60 = 11,425.84 : x
  2. Step 2: Convert to fraction form
    28,056.72/42,109.60 = 11,425.84/x
  3. Step 3: Cross multiply
    28,056.72x = 42,109.60 × 11,425.84
  4. Step 4: Simplify right side
    28,056.72x = 481,137,552.06
  5. Step 5: Solve for x
    x = 481,137,552.06/28,056.72
  6. Step 6: Final answer
    x = 17,148.75

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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.