Home / 11,118.96-15,343.29-6,403.59

Finding the Fourth Proportional to 11,118.96, 15,343.29 and 6,403.59

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Solution

The fourth proportional to 11,118.96, 15,343.29 and 6,403.59 is: 8,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.96 : 15,343.29 = 6,403.59 : x
  2. Step 2: Convert to fraction form
    11,118.96/15,343.29 = 6,403.59/x
  3. Step 3: Cross multiply
    11,118.96x = 15,343.29 × 6,403.59
  4. Step 4: Simplify right side
    11,118.96x = 98,252,138.41
  5. Step 5: Solve for x
    x = 98,252,138.41/11,118.96
  6. Step 6: Final answer
    x = 8,836.45

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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.