Home / 15,116.39-20,858.96-8,742.02

Finding the Fourth Proportional to 15,116.39, 20,858.96 and 8,742.02

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Solution

The fourth proportional to 15,116.39, 20,858.96 and 8,742.02 is: 12,063.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.39 : 20,858.96 = 8,742.02 : x
  2. Step 2: Convert to fraction form
    15,116.39/20,858.96 = 8,742.02/x
  3. Step 3: Cross multiply
    15,116.39x = 20,858.96 × 8,742.02
  4. Step 4: Simplify right side
    15,116.39x = 182,349,297.49
  5. Step 5: Solve for x
    x = 182,349,297.49/15,116.39
  6. Step 6: Final answer
    x = 12,063.02

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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.