Home / 12,688.98-19,039.42-5,668.34

Finding the Fourth Proportional to 12,688.98, 19,039.42 and 5,668.34

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Solution

The fourth proportional to 12,688.98, 19,039.42 and 5,668.34 is: 8,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.98 : 19,039.42 = 5,668.34 : x
  2. Step 2: Convert to fraction form
    12,688.98/19,039.42 = 5,668.34/x
  3. Step 3: Cross multiply
    12,688.98x = 19,039.42 × 5,668.34
  4. Step 4: Simplify right side
    12,688.98x = 107,921,817.85
  5. Step 5: Solve for x
    x = 107,921,817.85/12,688.98
  6. Step 6: Final answer
    x = 8,505.16

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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.