Home / 13,605.53-20,422.20-7,036.43

Finding the Fourth Proportional to 13,605.53, 20,422.20 and 7,036.43

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Solution

The fourth proportional to 13,605.53, 20,422.20 and 7,036.43 is: 10,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.53 : 20,422.20 = 7,036.43 : x
  2. Step 2: Convert to fraction form
    13,605.53/20,422.20 = 7,036.43/x
  3. Step 3: Cross multiply
    13,605.53x = 20,422.20 × 7,036.43
  4. Step 4: Simplify right side
    13,605.53x = 143,699,380.75
  5. Step 5: Solve for x
    x = 143,699,380.75/13,605.53
  6. Step 6: Final answer
    x = 10,561.84

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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.