Home / 19,878.37-29,816.93-9,345.85

Finding the Fourth Proportional to 19,878.37, 29,816.93 and 9,345.85

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Solution

The fourth proportional to 19,878.37, 29,816.93 and 9,345.85 is: 14,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.37 : 29,816.93 = 9,345.85 : x
  2. Step 2: Convert to fraction form
    19,878.37/29,816.93 = 9,345.85/x
  3. Step 3: Cross multiply
    19,878.37x = 29,816.93 × 9,345.85
  4. Step 4: Simplify right side
    19,878.37x = 278,664,504.06
  5. Step 5: Solve for x
    x = 278,664,504.06/19,878.37
  6. Step 6: Final answer
    x = 14,018.48

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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.