Home / 21,986.42-30,341.52-11,915.01

Finding the Fourth Proportional to 21,986.42, 30,341.52 and 11,915.01

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Solution

The fourth proportional to 21,986.42, 30,341.52 and 11,915.01 is: 16,442.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,986.42 : 30,341.52 = 11,915.01 : x
  2. Step 2: Convert to fraction form
    21,986.42/30,341.52 = 11,915.01/x
  3. Step 3: Cross multiply
    21,986.42x = 30,341.52 × 11,915.01
  4. Step 4: Simplify right side
    21,986.42x = 361,519,514.22
  5. Step 5: Solve for x
    x = 361,519,514.22/21,986.42
  6. Step 6: Final answer
    x = 16,442.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.