Home / 31,431.26-47,146.79-12,711.08

Finding the Fourth Proportional to 31,431.26, 47,146.79 and 12,711.08

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Solution

The fourth proportional to 31,431.26, 47,146.79 and 12,711.08 is: 19,066.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.26 : 47,146.79 = 12,711.08 : x
  2. Step 2: Convert to fraction form
    31,431.26/47,146.79 = 12,711.08/x
  3. Step 3: Cross multiply
    31,431.26x = 47,146.79 × 12,711.08
  4. Step 4: Simplify right side
    31,431.26x = 599,286,769.08
  5. Step 5: Solve for x
    x = 599,286,769.08/31,431.26
  6. Step 6: Final answer
    x = 19,066.58

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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.