Home / 13,558.03-18,711.95-8,180.75

Finding the Fourth Proportional to 13,558.03, 18,711.95 and 8,180.75

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Solution

The fourth proportional to 13,558.03, 18,711.95 and 8,180.75 is: 11,290.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.03 : 18,711.95 = 8,180.75 : x
  2. Step 2: Convert to fraction form
    13,558.03/18,711.95 = 8,180.75/x
  3. Step 3: Cross multiply
    13,558.03x = 18,711.95 × 8,180.75
  4. Step 4: Simplify right side
    13,558.03x = 153,077,720.10
  5. Step 5: Solve for x
    x = 153,077,720.10/13,558.03
  6. Step 6: Final answer
    x = 11,290.56

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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.