Home / 21,862.36-32,779.41-11,998.99

Finding the Fourth Proportional to 21,862.36, 32,779.41 and 11,998.99

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Solution

The fourth proportional to 21,862.36, 32,779.41 and 11,998.99 is: 17,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.36 : 32,779.41 = 11,998.99 : x
  2. Step 2: Convert to fraction form
    21,862.36/32,779.41 = 11,998.99/x
  3. Step 3: Cross multiply
    21,862.36x = 32,779.41 × 11,998.99
  4. Step 4: Simplify right side
    21,862.36x = 393,319,812.80
  5. Step 5: Solve for x
    x = 393,319,812.80/21,862.36
  6. Step 6: Final answer
    x = 17,990.73

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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.