Home / 11,213.90-15,475.90-6,178.12

Finding the Fourth Proportional to 11,213.90, 15,475.90 and 6,178.12

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Solution

The fourth proportional to 11,213.90, 15,475.90 and 6,178.12 is: 8,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.90 : 15,475.90 = 6,178.12 : x
  2. Step 2: Convert to fraction form
    11,213.90/15,475.90 = 6,178.12/x
  3. Step 3: Cross multiply
    11,213.90x = 15,475.90 × 6,178.12
  4. Step 4: Simplify right side
    11,213.90x = 95,611,967.31
  5. Step 5: Solve for x
    x = 95,611,967.31/11,213.90
  6. Step 6: Final answer
    x = 8,526.20

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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.