Home / 13,118.42-18,101.34-7,374.74

Finding the Fourth Proportional to 13,118.42, 18,101.34 and 7,374.74

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Solution

The fourth proportional to 13,118.42, 18,101.34 and 7,374.74 is: 10,175.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,118.42 : 18,101.34 = 7,374.74 : x
  2. Step 2: Convert to fraction form
    13,118.42/18,101.34 = 7,374.74/x
  3. Step 3: Cross multiply
    13,118.42x = 18,101.34 × 7,374.74
  4. Step 4: Simplify right side
    13,118.42x = 133,492,676.15
  5. Step 5: Solve for x
    x = 133,492,676.15/13,118.42
  6. Step 6: Final answer
    x = 10,175.97

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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.