Home / 25,125.96-37,689.30-11,979.72

Finding the Fourth Proportional to 25,125.96, 37,689.30 and 11,979.72

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Solution

The fourth proportional to 25,125.96, 37,689.30 and 11,979.72 is: 17,969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,125.96 : 37,689.30 = 11,979.72 : x
  2. Step 2: Convert to fraction form
    25,125.96/37,689.30 = 11,979.72/x
  3. Step 3: Cross multiply
    25,125.96x = 37,689.30 × 11,979.72
  4. Step 4: Simplify right side
    25,125.96x = 451,507,261.00
  5. Step 5: Solve for x
    x = 451,507,261.00/25,125.96
  6. Step 6: Final answer
    x = 17,969.75

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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.