Home / 19,847.94-29,778.78-13,211.07

Finding the Fourth Proportional to 19,847.94, 29,778.78 and 13,211.07

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Solution

The fourth proportional to 19,847.94, 29,778.78 and 13,211.07 is: 19,821.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,847.94 : 29,778.78 = 13,211.07 : x
  2. Step 2: Convert to fraction form
    19,847.94/29,778.78 = 13,211.07/x
  3. Step 3: Cross multiply
    19,847.94x = 29,778.78 × 13,211.07
  4. Step 4: Simplify right side
    19,847.94x = 393,409,547.09
  5. Step 5: Solve for x
    x = 393,409,547.09/19,847.94
  6. Step 6: Final answer
    x = 19,821.18

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1.5x scale

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.