Home / 12,372.86-18,561.65-4,977.92

Finding the Fourth Proportional to 12,372.86, 18,561.65 and 4,977.92

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Solution

The fourth proportional to 12,372.86, 18,561.65 and 4,977.92 is: 7,467.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.86 : 18,561.65 = 4,977.92 : x
  2. Step 2: Convert to fraction form
    12,372.86/18,561.65 = 4,977.92/x
  3. Step 3: Cross multiply
    12,372.86x = 18,561.65 × 4,977.92
  4. Step 4: Simplify right side
    12,372.86x = 92,398,291.07
  5. Step 5: Solve for x
    x = 92,398,291.07/12,372.86
  6. Step 6: Final answer
    x = 7,467.82

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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.