Home / 19,480.49-29,199.77-8,392.40

Finding the Fourth Proportional to 19,480.49, 29,199.77 and 8,392.40

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Solution

The fourth proportional to 19,480.49, 29,199.77 and 8,392.40 is: 12,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,480.49 : 29,199.77 = 8,392.40 : x
  2. Step 2: Convert to fraction form
    19,480.49/29,199.77 = 8,392.40/x
  3. Step 3: Cross multiply
    19,480.49x = 29,199.77 × 8,392.40
  4. Step 4: Simplify right side
    19,480.49x = 245,056,149.75
  5. Step 5: Solve for x
    x = 245,056,149.75/19,480.49
  6. Step 6: Final answer
    x = 12,579.57

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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.