Home / 19,409.81-29,120.85-6,929.55

Finding the Fourth Proportional to 19,409.81, 29,120.85 and 6,929.55

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Solution

The fourth proportional to 19,409.81, 29,120.85 and 6,929.55 is: 10,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,409.81 : 29,120.85 = 6,929.55 : x
  2. Step 2: Convert to fraction form
    19,409.81/29,120.85 = 6,929.55/x
  3. Step 3: Cross multiply
    19,409.81x = 29,120.85 × 6,929.55
  4. Step 4: Simplify right side
    19,409.81x = 201,794,386.12
  5. Step 5: Solve for x
    x = 201,794,386.12/19,409.81
  6. Step 6: Final answer
    x = 10,396.52

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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.