Home / 13,457.09-20,188.88-4,223.09

Finding the Fourth Proportional to 13,457.09, 20,188.88 and 4,223.09

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Solution

The fourth proportional to 13,457.09, 20,188.88 and 4,223.09 is: 6,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.09 : 20,188.88 = 4,223.09 : x
  2. Step 2: Convert to fraction form
    13,457.09/20,188.88 = 4,223.09/x
  3. Step 3: Cross multiply
    13,457.09x = 20,188.88 × 4,223.09
  4. Step 4: Simplify right side
    13,457.09x = 85,259,457.24
  5. Step 5: Solve for x
    x = 85,259,457.24/13,457.09
  6. Step 6: Final answer
    x = 6,335.65

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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.