Home / 21,818.46-30,107.63-12,257.60

Finding the Fourth Proportional to 21,818.46, 30,107.63 and 12,257.60

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Solution

The fourth proportional to 21,818.46, 30,107.63 and 12,257.60 is: 16,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.46 : 30,107.63 = 12,257.60 : x
  2. Step 2: Convert to fraction form
    21,818.46/30,107.63 = 12,257.60/x
  3. Step 3: Cross multiply
    21,818.46x = 30,107.63 × 12,257.60
  4. Step 4: Simplify right side
    21,818.46x = 369,047,181.32
  5. Step 5: Solve for x
    x = 369,047,181.32/21,818.46
  6. Step 6: Final answer
    x = 16,914.45

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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.