Home / 12,021.30-16,588.80-6,715.80

Finding the Fourth Proportional to 12,021.30, 16,588.80 and 6,715.80

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Solution

The fourth proportional to 12,021.30, 16,588.80 and 6,715.80 is: 9,267.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,021.30 : 16,588.80 = 6,715.80 : x
  2. Step 2: Convert to fraction form
    12,021.30/16,588.80 = 6,715.80/x
  3. Step 3: Cross multiply
    12,021.30x = 16,588.80 × 6,715.80
  4. Step 4: Simplify right side
    12,021.30x = 111,407,063.04
  5. Step 5: Solve for x
    x = 111,407,063.04/12,021.30
  6. Step 6: Final answer
    x = 9,267.47

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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.