Home / 20,679.98-28,554.39-15,892.34

Finding the Fourth Proportional to 20,679.98, 28,554.39 and 15,892.34

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Solution

The fourth proportional to 20,679.98, 28,554.39 and 15,892.34 is: 21,943.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.98 : 28,554.39 = 15,892.34 : x
  2. Step 2: Convert to fraction form
    20,679.98/28,554.39 = 15,892.34/x
  3. Step 3: Cross multiply
    20,679.98x = 28,554.39 × 15,892.34
  4. Step 4: Simplify right side
    20,679.98x = 453,796,074.37
  5. Step 5: Solve for x
    x = 453,796,074.37/20,679.98
  6. Step 6: Final answer
    x = 21,943.74

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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.