Home / 13,435.87-18,499.14-12,190.30

Finding the Fourth Proportional to 13,435.87, 18,499.14 and 12,190.30

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Solution

The fourth proportional to 13,435.87, 18,499.14 and 12,190.30 is: 16,784.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.87 : 18,499.14 = 12,190.30 : x
  2. Step 2: Convert to fraction form
    13,435.87/18,499.14 = 12,190.30/x
  3. Step 3: Cross multiply
    13,435.87x = 18,499.14 × 12,190.30
  4. Step 4: Simplify right side
    13,435.87x = 225,510,106.41
  5. Step 5: Solve for x
    x = 225,510,106.41/13,435.87
  6. Step 6: Final answer
    x = 16,784.19

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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.