Home / 12,824.60-19,209.96-8,142.21

Finding the Fourth Proportional to 12,824.60, 19,209.96 and 8,142.21

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Solution

The fourth proportional to 12,824.60, 19,209.96 and 8,142.21 is: 12,196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.60 : 19,209.96 = 8,142.21 : x
  2. Step 2: Convert to fraction form
    12,824.60/19,209.96 = 8,142.21/x
  3. Step 3: Cross multiply
    12,824.60x = 19,209.96 × 8,142.21
  4. Step 4: Simplify right side
    12,824.60x = 156,411,528.41
  5. Step 5: Solve for x
    x = 156,411,528.41/12,824.60
  6. Step 6: Final answer
    x = 12,196.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.