Home / 13,472.72-20,109.86-11,896.40

Finding the Fourth Proportional to 13,472.72, 20,109.86 and 11,896.40

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Solution

The fourth proportional to 13,472.72, 20,109.86 and 11,896.40 is: 17,756.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,472.72 : 20,109.86 = 11,896.40 : x
  2. Step 2: Convert to fraction form
    13,472.72/20,109.86 = 11,896.40/x
  3. Step 3: Cross multiply
    13,472.72x = 20,109.86 × 11,896.40
  4. Step 4: Simplify right side
    13,472.72x = 239,234,938.50
  5. Step 5: Solve for x
    x = 239,234,938.50/13,472.72
  6. Step 6: Final answer
    x = 17,756.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.