Home / 13,620.34-18,795.65-7,651.86

Finding the Fourth Proportional to 13,620.34, 18,795.65 and 7,651.86

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Solution

The fourth proportional to 13,620.34, 18,795.65 and 7,651.86 is: 10,559.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.34 : 18,795.65 = 7,651.86 : x
  2. Step 2: Convert to fraction form
    13,620.34/18,795.65 = 7,651.86/x
  3. Step 3: Cross multiply
    13,620.34x = 18,795.65 × 7,651.86
  4. Step 4: Simplify right side
    13,620.34x = 143,821,682.41
  5. Step 5: Solve for x
    x = 143,821,682.41/13,620.34
  6. Step 6: Final answer
    x = 10,559.33

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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.