Home / 20,517.96-28,312.74-12,562.44

Finding the Fourth Proportional to 20,517.96, 28,312.74 and 12,562.44

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Solution

The fourth proportional to 20,517.96, 28,312.74 and 12,562.44 is: 17,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.96 : 28,312.74 = 12,562.44 : x
  2. Step 2: Convert to fraction form
    20,517.96/28,312.74 = 12,562.44/x
  3. Step 3: Cross multiply
    20,517.96x = 28,312.74 × 12,562.44
  4. Step 4: Simplify right side
    20,517.96x = 355,677,097.49
  5. Step 5: Solve for x
    x = 355,677,097.49/20,517.96
  6. Step 6: Final answer
    x = 17,334.92

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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.