Home / 20,456.84-28,232.58-12,504.38

Finding the Fourth Proportional to 20,456.84, 28,232.58 and 12,504.38

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Solution

The fourth proportional to 20,456.84, 28,232.58 and 12,504.38 is: 17,257.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.84 : 28,232.58 = 12,504.38 : x
  2. Step 2: Convert to fraction form
    20,456.84/28,232.58 = 12,504.38/x
  3. Step 3: Cross multiply
    20,456.84x = 28,232.58 × 12,504.38
  4. Step 4: Simplify right side
    20,456.84x = 353,030,908.70
  5. Step 5: Solve for x
    x = 353,030,908.70/20,456.84
  6. Step 6: Final answer
    x = 17,257.35

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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.