Home / 12,208.96-16,851.60-8,432.80

Finding the Fourth Proportional to 12,208.96, 16,851.60 and 8,432.80

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Solution

The fourth proportional to 12,208.96, 16,851.60 and 8,432.80 is: 11,639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.96 : 16,851.60 = 8,432.80 : x
  2. Step 2: Convert to fraction form
    12,208.96/16,851.60 = 8,432.80/x
  3. Step 3: Cross multiply
    12,208.96x = 16,851.60 × 8,432.80
  4. Step 4: Simplify right side
    12,208.96x = 142,106,172.48
  5. Step 5: Solve for x
    x = 142,106,172.48/12,208.96
  6. Step 6: Final answer
    x = 11,639.50

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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.