Home / 11,103.42-15,315.56-6,623.72

Finding the Fourth Proportional to 11,103.42, 15,315.56 and 6,623.72

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Solution

The fourth proportional to 11,103.42, 15,315.56 and 6,623.72 is: 9,136.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.42 : 15,315.56 = 6,623.72 : x
  2. Step 2: Convert to fraction form
    11,103.42/15,315.56 = 6,623.72/x
  3. Step 3: Cross multiply
    11,103.42x = 15,315.56 × 6,623.72
  4. Step 4: Simplify right side
    11,103.42x = 101,445,953.66
  5. Step 5: Solve for x
    x = 101,445,953.66/11,103.42
  6. Step 6: Final answer
    x = 9,136.46

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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.