Home / 13,889.96-20,856.54-11,267.72

Finding the Fourth Proportional to 13,889.96, 20,856.54 and 11,267.72

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Solution

The fourth proportional to 13,889.96, 20,856.54 and 11,267.72 is: 16,919.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.96 : 20,856.54 = 11,267.72 : x
  2. Step 2: Convert to fraction form
    13,889.96/20,856.54 = 11,267.72/x
  3. Step 3: Cross multiply
    13,889.96x = 20,856.54 × 11,267.72
  4. Step 4: Simplify right side
    13,889.96x = 235,005,652.89
  5. Step 5: Solve for x
    x = 235,005,652.89/13,889.96
  6. Step 6: Final answer
    x = 16,919.10

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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.