Home / 13,478.82-20,187.06-13,011.72

Finding the Fourth Proportional to 13,478.82, 20,187.06 and 13,011.72

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Solution

The fourth proportional to 13,478.82, 20,187.06 and 13,011.72 is: 19,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.82 : 20,187.06 = 13,011.72 : x
  2. Step 2: Convert to fraction form
    13,478.82/20,187.06 = 13,011.72/x
  3. Step 3: Cross multiply
    13,478.82x = 20,187.06 × 13,011.72
  4. Step 4: Simplify right side
    13,478.82x = 262,668,372.34
  5. Step 5: Solve for x
    x = 262,668,372.34/13,478.82
  6. Step 6: Final answer
    x = 19,487.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.