Home / 20,636.56-28,482.60-12,257.92

Finding the Fourth Proportional to 20,636.56, 28,482.60 and 12,257.92

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Solution

The fourth proportional to 20,636.56, 28,482.60 and 12,257.92 is: 16,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.56 : 28,482.60 = 12,257.92 : x
  2. Step 2: Convert to fraction form
    20,636.56/28,482.60 = 12,257.92/x
  3. Step 3: Cross multiply
    20,636.56x = 28,482.60 × 12,257.92
  4. Step 4: Simplify right side
    20,636.56x = 349,137,432.19
  5. Step 5: Solve for x
    x = 349,137,432.19/20,636.56
  6. Step 6: Final answer
    x = 16,918.39

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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.