Home / 11,215.02-16,818.60-3,315.42

Finding the Fourth Proportional to 11,215.02, 16,818.60 and 3,315.42

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Solution

The fourth proportional to 11,215.02, 16,818.60 and 3,315.42 is: 4,971.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.02 : 16,818.60 = 3,315.42 : x
  2. Step 2: Convert to fraction form
    11,215.02/16,818.60 = 3,315.42/x
  3. Step 3: Cross multiply
    11,215.02x = 16,818.60 × 3,315.42
  4. Step 4: Simplify right side
    11,215.02x = 55,760,722.81
  5. Step 5: Solve for x
    x = 55,760,722.81/11,215.02
  6. Step 6: Final answer
    x = 4,971.97

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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.