Home / 19,888.32-29,840.36-8,198.80

Finding the Fourth Proportional to 19,888.32, 29,840.36 and 8,198.80

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Solution

The fourth proportional to 19,888.32, 29,840.36 and 8,198.80 is: 12,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.32 : 29,840.36 = 8,198.80 : x
  2. Step 2: Convert to fraction form
    19,888.32/29,840.36 = 8,198.80/x
  3. Step 3: Cross multiply
    19,888.32x = 29,840.36 × 8,198.80
  4. Step 4: Simplify right side
    19,888.32x = 244,655,143.57
  5. Step 5: Solve for x
    x = 244,655,143.57/19,888.32
  6. Step 6: Final answer
    x = 12,301.45

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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.