Home / 15,187.19-20,958.35-8,472.64

Finding the Fourth Proportional to 15,187.19, 20,958.35 and 8,472.64

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Solution

The fourth proportional to 15,187.19, 20,958.35 and 8,472.64 is: 11,692.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.19 : 20,958.35 = 8,472.64 : x
  2. Step 2: Convert to fraction form
    15,187.19/20,958.35 = 8,472.64/x
  3. Step 3: Cross multiply
    15,187.19x = 20,958.35 × 8,472.64
  4. Step 4: Simplify right side
    15,187.19x = 177,572,407.39
  5. Step 5: Solve for x
    x = 177,572,407.39/15,187.19
  6. Step 6: Final answer
    x = 11,692.25

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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.