Home / 13,189.90-19,785.05-4,305.19

Finding the Fourth Proportional to 13,189.90, 19,785.05 and 4,305.19

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Solution

The fourth proportional to 13,189.90, 19,785.05 and 4,305.19 is: 6,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.90 : 19,785.05 = 4,305.19 : x
  2. Step 2: Convert to fraction form
    13,189.90/19,785.05 = 4,305.19/x
  3. Step 3: Cross multiply
    13,189.90x = 19,785.05 × 4,305.19
  4. Step 4: Simplify right side
    13,189.90x = 85,178,399.41
  5. Step 5: Solve for x
    x = 85,178,399.41/13,189.90
  6. Step 6: Final answer
    x = 6,457.85

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Similar ratio
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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.