Home / 13,719.22-18,909.87-9,180.28

Finding the Fourth Proportional to 13,719.22, 18,909.87 and 9,180.28

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Solution

The fourth proportional to 13,719.22, 18,909.87 and 9,180.28 is: 12,653.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.22 : 18,909.87 = 9,180.28 : x
  2. Step 2: Convert to fraction form
    13,719.22/18,909.87 = 9,180.28/x
  3. Step 3: Cross multiply
    13,719.22x = 18,909.87 × 9,180.28
  4. Step 4: Simplify right side
    13,719.22x = 173,597,806.81
  5. Step 5: Solve for x
    x = 173,597,806.81/13,719.22
  6. Step 6: Final answer
    x = 12,653.62

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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.