Home / 15,187.16-20,958.80-8,813.26

Finding the Fourth Proportional to 15,187.16, 20,958.80 and 8,813.26

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Solution

The fourth proportional to 15,187.16, 20,958.80 and 8,813.26 is: 12,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.16 : 20,958.80 = 8,813.26 : x
  2. Step 2: Convert to fraction form
    15,187.16/20,958.80 = 8,813.26/x
  3. Step 3: Cross multiply
    15,187.16x = 20,958.80 × 8,813.26
  4. Step 4: Simplify right side
    15,187.16x = 184,715,353.69
  5. Step 5: Solve for x
    x = 184,715,353.69/15,187.16
  6. Step 6: Final answer
    x = 12,162.60

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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.