Home / 13,457.64-20,100.33-12,189.29

Finding the Fourth Proportional to 13,457.64, 20,100.33 and 12,189.29

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Solution

The fourth proportional to 13,457.64, 20,100.33 and 12,189.29 is: 18,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.64 : 20,100.33 = 12,189.29 : x
  2. Step 2: Convert to fraction form
    13,457.64/20,100.33 = 12,189.29/x
  3. Step 3: Cross multiply
    13,457.64x = 20,100.33 × 12,189.29
  4. Step 4: Simplify right side
    13,457.64x = 245,008,751.47
  5. Step 5: Solve for x
    x = 245,008,751.47/13,457.64
  6. Step 6: Final answer
    x = 18,205.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.