Home / 11,215.21-15,475.76-6,433.88

Finding the Fourth Proportional to 11,215.21, 15,475.76 and 6,433.88

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Solution

The fourth proportional to 11,215.21, 15,475.76 and 6,433.88 is: 8,878.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.21 : 15,475.76 = 6,433.88 : x
  2. Step 2: Convert to fraction form
    11,215.21/15,475.76 = 6,433.88/x
  3. Step 3: Cross multiply
    11,215.21x = 15,475.76 × 6,433.88
  4. Step 4: Simplify right side
    11,215.21x = 99,569,184.38
  5. Step 5: Solve for x
    x = 99,569,184.38/11,215.21
  6. Step 6: Final answer
    x = 8,878.05

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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.