Home / 20,694.72-28,564.96-14,074.56

Finding the Fourth Proportional to 20,694.72, 28,564.96 and 14,074.56

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Solution

The fourth proportional to 20,694.72, 28,564.96 and 14,074.56 is: 19,427.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.72 : 28,564.96 = 14,074.56 : x
  2. Step 2: Convert to fraction form
    20,694.72/28,564.96 = 14,074.56/x
  3. Step 3: Cross multiply
    20,694.72x = 28,564.96 × 14,074.56
  4. Step 4: Simplify right side
    20,694.72x = 402,039,243.42
  5. Step 5: Solve for x
    x = 402,039,243.42/20,694.72
  6. Step 6: Final answer
    x = 19,427.14

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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.