Home / 21,785.70-30,063.42-12,354.60

Finding the Fourth Proportional to 21,785.70, 30,063.42 and 12,354.60

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Solution

The fourth proportional to 21,785.70, 30,063.42 and 12,354.60 is: 17,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.70 : 30,063.42 = 12,354.60 : x
  2. Step 2: Convert to fraction form
    21,785.70/30,063.42 = 12,354.60/x
  3. Step 3: Cross multiply
    21,785.70x = 30,063.42 × 12,354.60
  4. Step 4: Simplify right side
    21,785.70x = 371,421,528.73
  5. Step 5: Solve for x
    x = 371,421,528.73/21,785.70
  6. Step 6: Final answer
    x = 17,048.87

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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.