Home / 12,128.60-16,737.30-6,823.41

Finding the Fourth Proportional to 12,128.60, 16,737.30 and 6,823.41

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Solution

The fourth proportional to 12,128.60, 16,737.30 and 6,823.41 is: 9,416.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.60 : 16,737.30 = 6,823.41 : x
  2. Step 2: Convert to fraction form
    12,128.60/16,737.30 = 6,823.41/x
  3. Step 3: Cross multiply
    12,128.60x = 16,737.30 × 6,823.41
  4. Step 4: Simplify right side
    12,128.60x = 114,205,397.43
  5. Step 5: Solve for x
    x = 114,205,397.43/12,128.60
  6. Step 6: Final answer
    x = 9,416.20

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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.