Home / 11,289.96-16,929.58-3,389.40

Finding the Fourth Proportional to 11,289.96, 16,929.58 and 3,389.40

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Solution

The fourth proportional to 11,289.96, 16,929.58 and 3,389.40 is: 5,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.96 : 16,929.58 = 3,389.40 : x
  2. Step 2: Convert to fraction form
    11,289.96/16,929.58 = 3,389.40/x
  3. Step 3: Cross multiply
    11,289.96x = 16,929.58 × 3,389.40
  4. Step 4: Simplify right side
    11,289.96x = 57,381,118.45
  5. Step 5: Solve for x
    x = 57,381,118.45/11,289.96
  6. Step 6: Final answer
    x = 5,082.49

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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.