Home / 20,559.21-28,370.12-11,607.60

Finding the Fourth Proportional to 20,559.21, 28,370.12 and 11,607.60

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Solution

The fourth proportional to 20,559.21, 28,370.12 and 11,607.60 is: 16,017.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.21 : 28,370.12 = 11,607.60 : x
  2. Step 2: Convert to fraction form
    20,559.21/28,370.12 = 11,607.60/x
  3. Step 3: Cross multiply
    20,559.21x = 28,370.12 × 11,607.60
  4. Step 4: Simplify right side
    20,559.21x = 329,309,033.93
  5. Step 5: Solve for x
    x = 329,309,033.93/20,559.21
  6. Step 6: Final answer
    x = 16,017.59

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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.