Home / 13,740.72-18,977.94-9,045.96

Finding the Fourth Proportional to 13,740.72, 18,977.94 and 9,045.96

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Solution

The fourth proportional to 13,740.72, 18,977.94 and 9,045.96 is: 12,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.72 : 18,977.94 = 9,045.96 : x
  2. Step 2: Convert to fraction form
    13,740.72/18,977.94 = 9,045.96/x
  3. Step 3: Cross multiply
    13,740.72x = 18,977.94 × 9,045.96
  4. Step 4: Simplify right side
    13,740.72x = 171,673,686.12
  5. Step 5: Solve for x
    x = 171,673,686.12/13,740.72
  6. Step 6: Final answer
    x = 12,493.79

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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.