Home / 19,904.40-29,845.80-8,218.80

Finding the Fourth Proportional to 19,904.40, 29,845.80 and 8,218.80

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Solution

The fourth proportional to 19,904.40, 29,845.80 and 8,218.80 is: 12,323.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,904.40 : 29,845.80 = 8,218.80 : x
  2. Step 2: Convert to fraction form
    19,904.40/29,845.80 = 8,218.80/x
  3. Step 3: Cross multiply
    19,904.40x = 29,845.80 × 8,218.80
  4. Step 4: Simplify right side
    19,904.40x = 245,296,661.04
  5. Step 5: Solve for x
    x = 245,296,661.04/19,904.40
  6. Step 6: Final answer
    x = 12,323.74

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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.