Home / 28,475.85-42,705.70-11,815.27

Finding the Fourth Proportional to 28,475.85, 42,705.70 and 11,815.27

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Solution

The fourth proportional to 28,475.85, 42,705.70 and 11,815.27 is: 17,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,475.85 : 42,705.70 = 11,815.27 : x
  2. Step 2: Convert to fraction form
    28,475.85/42,705.70 = 11,815.27/x
  3. Step 3: Cross multiply
    28,475.85x = 42,705.70 × 11,815.27
  4. Step 4: Simplify right side
    28,475.85x = 504,579,302.04
  5. Step 5: Solve for x
    x = 504,579,302.04/28,475.85
  6. Step 6: Final answer
    x = 17,719.55

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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.