Home / 13,686.84-20,530.08-3,298.50

Finding the Fourth Proportional to 13,686.84, 20,530.08 and 3,298.50

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Solution

The fourth proportional to 13,686.84, 20,530.08 and 3,298.50 is: 4,947.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.84 : 20,530.08 = 3,298.50 : x
  2. Step 2: Convert to fraction form
    13,686.84/20,530.08 = 3,298.50/x
  3. Step 3: Cross multiply
    13,686.84x = 20,530.08 × 3,298.50
  4. Step 4: Simplify right side
    13,686.84x = 67,718,468.88
  5. Step 5: Solve for x
    x = 67,718,468.88/13,686.84
  6. Step 6: Final answer
    x = 4,947.71

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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.