Home / 15,187.48-20,958.69-8,472.71

Finding the Fourth Proportional to 15,187.48, 20,958.69 and 8,472.71

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Solution

The fourth proportional to 15,187.48, 20,958.69 and 8,472.71 is: 11,692.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187.48 : 20,958.69 = 8,472.71 : x
  2. Step 2: Convert to fraction form
    15,187.48/20,958.69 = 8,472.71/x
  3. Step 3: Cross multiply
    15,187.48x = 20,958.69 × 8,472.71
  4. Step 4: Simplify right side
    15,187.48x = 177,576,877.41
  5. Step 5: Solve for x
    x = 177,576,877.41/15,187.48
  6. Step 6: Final answer
    x = 11,692.32

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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.