Home / 12,996.86-19,495.28-4,231.77

Finding the Fourth Proportional to 12,996.86, 19,495.28 and 4,231.77

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Solution

The fourth proportional to 12,996.86, 19,495.28 and 4,231.77 is: 6,347.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996.86 : 19,495.28 = 4,231.77 : x
  2. Step 2: Convert to fraction form
    12,996.86/19,495.28 = 4,231.77/x
  3. Step 3: Cross multiply
    12,996.86x = 19,495.28 × 4,231.77
  4. Step 4: Simplify right side
    12,996.86x = 82,499,541.05
  5. Step 5: Solve for x
    x = 82,499,541.05/12,996.86
  6. Step 6: Final answer
    x = 6,347.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.