Home / 19,635.80-29,453.70-18,858.20

Finding the Fourth Proportional to 19,635.80, 29,453.70 and 18,858.20

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Solution

The fourth proportional to 19,635.80, 29,453.70 and 18,858.20 is: 28,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,635.80 : 29,453.70 = 18,858.20 : x
  2. Step 2: Convert to fraction form
    19,635.80/29,453.70 = 18,858.20/x
  3. Step 3: Cross multiply
    19,635.80x = 29,453.70 × 18,858.20
  4. Step 4: Simplify right side
    19,635.80x = 555,443,765.34
  5. Step 5: Solve for x
    x = 555,443,765.34/19,635.80
  6. Step 6: Final answer
    x = 28,287.30

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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.