Home / 11,939.59-16,477.86-6,636.12

Finding the Fourth Proportional to 11,939.59, 16,477.86 and 6,636.12

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Solution

The fourth proportional to 11,939.59, 16,477.86 and 6,636.12 is: 9,158.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.59 : 16,477.86 = 6,636.12 : x
  2. Step 2: Convert to fraction form
    11,939.59/16,477.86 = 6,636.12/x
  3. Step 3: Cross multiply
    11,939.59x = 16,477.86 × 6,636.12
  4. Step 4: Simplify right side
    11,939.59x = 109,348,973.91
  5. Step 5: Solve for x
    x = 109,348,973.91/11,939.59
  6. Step 6: Final answer
    x = 9,158.52

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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.