Home / 19,917.63-29,875.23-8,230.55

Finding the Fourth Proportional to 19,917.63, 29,875.23 and 8,230.55

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Solution

The fourth proportional to 19,917.63, 29,875.23 and 8,230.55 is: 12,345.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.63 : 29,875.23 = 8,230.55 : x
  2. Step 2: Convert to fraction form
    19,917.63/29,875.23 = 8,230.55/x
  3. Step 3: Cross multiply
    19,917.63x = 29,875.23 × 8,230.55
  4. Step 4: Simplify right side
    19,917.63x = 245,889,424.90
  5. Step 5: Solve for x
    x = 245,889,424.90/19,917.63
  6. Step 6: Final answer
    x = 12,345.32

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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.