Home / 13,591.86-20,370.60-7,751.76

Finding the Fourth Proportional to 13,591.86, 20,370.60 and 7,751.76

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Solution

The fourth proportional to 13,591.86, 20,370.60 and 7,751.76 is: 11,617.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,591.86 : 20,370.60 = 7,751.76 : x
  2. Step 2: Convert to fraction form
    13,591.86/20,370.60 = 7,751.76/x
  3. Step 3: Cross multiply
    13,591.86x = 20,370.60 × 7,751.76
  4. Step 4: Simplify right side
    13,591.86x = 157,908,002.26
  5. Step 5: Solve for x
    x = 157,908,002.26/13,591.86
  6. Step 6: Final answer
    x = 11,617.84

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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.