Home / 19,876.83-29,815.08-5,085.70

Finding the Fourth Proportional to 19,876.83, 29,815.08 and 5,085.70

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Solution

The fourth proportional to 19,876.83, 29,815.08 and 5,085.70 is: 7,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.83 : 29,815.08 = 5,085.70 : x
  2. Step 2: Convert to fraction form
    19,876.83/29,815.08 = 5,085.70/x
  3. Step 3: Cross multiply
    19,876.83x = 29,815.08 × 5,085.70
  4. Step 4: Simplify right side
    19,876.83x = 151,630,552.36
  5. Step 5: Solve for x
    x = 151,630,552.36/19,876.83
  6. Step 6: Final answer
    x = 7,628.51

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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.