Home / 12,886.21-17,778.26-7,581.03

Finding the Fourth Proportional to 12,886.21, 17,778.26 and 7,581.03

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Solution

The fourth proportional to 12,886.21, 17,778.26 and 7,581.03 is: 10,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.21 : 17,778.26 = 7,581.03 : x
  2. Step 2: Convert to fraction form
    12,886.21/17,778.26 = 7,581.03/x
  3. Step 3: Cross multiply
    12,886.21x = 17,778.26 × 7,581.03
  4. Step 4: Simplify right side
    12,886.21x = 134,777,528.37
  5. Step 5: Solve for x
    x = 134,777,528.37/12,886.21
  6. Step 6: Final answer
    x = 10,459.05

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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.