Home / 11,725.80-16,182.12-6,421

Finding the Fourth Proportional to 11,725.80, 16,182.12 and 6,421

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Solution

The fourth proportional to 11,725.80, 16,182.12 and 6,421 is: 8,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.80 : 16,182.12 = 6,421 : x
  2. Step 2: Convert to fraction form
    11,725.80/16,182.12 = 6,421/x
  3. Step 3: Cross multiply
    11,725.80x = 16,182.12 × 6,421
  4. Step 4: Simplify right side
    11,725.80x = 103,905,392.52
  5. Step 5: Solve for x
    x = 103,905,392.52/11,725.80
  6. Step 6: Final answer
    x = 8,861.26

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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.