Home / 13,598.89-20,421.33-8,863.09

Finding the Fourth Proportional to 13,598.89, 20,421.33 and 8,863.09

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Solution

The fourth proportional to 13,598.89, 20,421.33 and 8,863.09 is: 13,309.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.89 : 20,421.33 = 8,863.09 : x
  2. Step 2: Convert to fraction form
    13,598.89/20,421.33 = 8,863.09/x
  3. Step 3: Cross multiply
    13,598.89x = 20,421.33 × 8,863.09
  4. Step 4: Simplify right side
    13,598.89x = 180,996,113.05
  5. Step 5: Solve for x
    x = 180,996,113.05/13,598.89
  6. Step 6: Final answer
    x = 13,309.63

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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.