Home / 19,883.80-29,829.30-9,998.20

Finding the Fourth Proportional to 19,883.80, 29,829.30 and 9,998.20

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Solution

The fourth proportional to 19,883.80, 29,829.30 and 9,998.20 is: 14,999.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,883.80 : 29,829.30 = 9,998.20 : x
  2. Step 2: Convert to fraction form
    19,883.80/29,829.30 = 9,998.20/x
  3. Step 3: Cross multiply
    19,883.80x = 29,829.30 × 9,998.20
  4. Step 4: Simplify right side
    19,883.80x = 298,239,307.26
  5. Step 5: Solve for x
    x = 298,239,307.26/19,883.80
  6. Step 6: Final answer
    x = 14,999.11

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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.