Home / 13,686.36-20,529.52-3,298.12

Finding the Fourth Proportional to 13,686.36, 20,529.52 and 3,298.12

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Solution

The fourth proportional to 13,686.36, 20,529.52 and 3,298.12 is: 4,947.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.36 : 20,529.52 = 3,298.12 : x
  2. Step 2: Convert to fraction form
    13,686.36/20,529.52 = 3,298.12/x
  3. Step 3: Cross multiply
    13,686.36x = 20,529.52 × 3,298.12
  4. Step 4: Simplify right side
    13,686.36x = 67,708,820.50
  5. Step 5: Solve for x
    x = 67,708,820.50/13,686.36
  6. Step 6: Final answer
    x = 4,947.18

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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.