Home / 12,129.42-16,737.70-6,823.21

Finding the Fourth Proportional to 12,129.42, 16,737.70 and 6,823.21

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Solution

The fourth proportional to 12,129.42, 16,737.70 and 6,823.21 is: 9,415.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.42 : 16,737.70 = 6,823.21 : x
  2. Step 2: Convert to fraction form
    12,129.42/16,737.70 = 6,823.21/x
  3. Step 3: Cross multiply
    12,129.42x = 16,737.70 × 6,823.21
  4. Step 4: Simplify right side
    12,129.42x = 114,204,842.02
  5. Step 5: Solve for x
    x = 114,204,842.02/12,129.42
  6. Step 6: Final answer
    x = 9,415.52

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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.