Home / 13,853.61-20,780.46-3,465.36

Finding the Fourth Proportional to 13,853.61, 20,780.46 and 3,465.36

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Solution

The fourth proportional to 13,853.61, 20,780.46 and 3,465.36 is: 5,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.61 : 20,780.46 = 3,465.36 : x
  2. Step 2: Convert to fraction form
    13,853.61/20,780.46 = 3,465.36/x
  3. Step 3: Cross multiply
    13,853.61x = 20,780.46 × 3,465.36
  4. Step 4: Simplify right side
    13,853.61x = 72,011,774.87
  5. Step 5: Solve for x
    x = 72,011,774.87/13,853.61
  6. Step 6: Final answer
    x = 5,198.05

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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.