Home / 11,219.21-15,482.32-6,438.96

Finding the Fourth Proportional to 11,219.21, 15,482.32 and 6,438.96

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Solution

The fourth proportional to 11,219.21, 15,482.32 and 6,438.96 is: 8,885.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.21 : 15,482.32 = 6,438.96 : x
  2. Step 2: Convert to fraction form
    11,219.21/15,482.32 = 6,438.96/x
  3. Step 3: Cross multiply
    11,219.21x = 15,482.32 × 6,438.96
  4. Step 4: Simplify right side
    11,219.21x = 99,690,039.19
  5. Step 5: Solve for x
    x = 99,690,039.19/11,219.21
  6. Step 6: Final answer
    x = 8,885.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.