Home / 21,848.63-30,151.10-11,912.63

Finding the Fourth Proportional to 21,848.63, 30,151.10 and 11,912.63

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Solution

The fourth proportional to 21,848.63, 30,151.10 and 11,912.63 is: 16,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,848.63 : 30,151.10 = 11,912.63 : x
  2. Step 2: Convert to fraction form
    21,848.63/30,151.10 = 11,912.63/x
  3. Step 3: Cross multiply
    21,848.63x = 30,151.10 × 11,912.63
  4. Step 4: Simplify right side
    21,848.63x = 359,178,777.42
  5. Step 5: Solve for x
    x = 359,178,777.42/21,848.63
  6. Step 6: Final answer
    x = 16,439.42

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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.