Home / 13,388.21-18,482.16-9,412.73

Finding the Fourth Proportional to 13,388.21, 18,482.16 and 9,412.73

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Solution

The fourth proportional to 13,388.21, 18,482.16 and 9,412.73 is: 12,994.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.21 : 18,482.16 = 9,412.73 : x
  2. Step 2: Convert to fraction form
    13,388.21/18,482.16 = 9,412.73/x
  3. Step 3: Cross multiply
    13,388.21x = 18,482.16 × 9,412.73
  4. Step 4: Simplify right side
    13,388.21x = 173,967,581.90
  5. Step 5: Solve for x
    x = 173,967,581.90/13,388.21
  6. Step 6: Final answer
    x = 12,994.09

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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.