Home / 12,136.40-16,747.52-6,831

Finding the Fourth Proportional to 12,136.40, 16,747.52 and 6,831

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Solution

The fourth proportional to 12,136.40, 16,747.52 and 6,831 is: 9,426.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.40 : 16,747.52 = 6,831 : x
  2. Step 2: Convert to fraction form
    12,136.40/16,747.52 = 6,831/x
  3. Step 3: Cross multiply
    12,136.40x = 16,747.52 × 6,831
  4. Step 4: Simplify right side
    12,136.40x = 114,402,309.12
  5. Step 5: Solve for x
    x = 114,402,309.12/12,136.40
  6. Step 6: Final answer
    x = 9,426.38

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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.