Home / 20,741.57-28,615.23-12,769.95

Finding the Fourth Proportional to 20,741.57, 28,615.23 and 12,769.95

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Solution

The fourth proportional to 20,741.57, 28,615.23 and 12,769.95 is: 17,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.57 : 28,615.23 = 12,769.95 : x
  2. Step 2: Convert to fraction form
    20,741.57/28,615.23 = 12,769.95/x
  3. Step 3: Cross multiply
    20,741.57x = 28,615.23 × 12,769.95
  4. Step 4: Simplify right side
    20,741.57x = 365,415,056.34
  5. Step 5: Solve for x
    x = 365,415,056.34/20,741.57
  6. Step 6: Final answer
    x = 17,617.53

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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.