Home / 12,128.40-16,737.30-6,823.26

Finding the Fourth Proportional to 12,128.40, 16,737.30 and 6,823.26

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Solution

The fourth proportional to 12,128.40, 16,737.30 and 6,823.26 is: 9,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.40 : 16,737.30 = 6,823.26 : x
  2. Step 2: Convert to fraction form
    12,128.40/16,737.30 = 6,823.26/x
  3. Step 3: Cross multiply
    12,128.40x = 16,737.30 × 6,823.26
  4. Step 4: Simplify right side
    12,128.40x = 114,202,949.60
  5. Step 5: Solve for x
    x = 114,202,949.60/12,128.40
  6. Step 6: Final answer
    x = 9,416.16

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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.