Home / 13,391.80-20,087.59-4,031.79

Finding the Fourth Proportional to 13,391.80, 20,087.59 and 4,031.79

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Solution

The fourth proportional to 13,391.80, 20,087.59 and 4,031.79 is: 6,047.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.80 : 20,087.59 = 4,031.79 : x
  2. Step 2: Convert to fraction form
    13,391.80/20,087.59 = 4,031.79/x
  3. Step 3: Cross multiply
    13,391.80x = 20,087.59 × 4,031.79
  4. Step 4: Simplify right side
    13,391.80x = 80,988,944.49
  5. Step 5: Solve for x
    x = 80,988,944.49/13,391.80
  6. Step 6: Final answer
    x = 6,047.65

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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.