Home / 20,436.08-28,204.84-12,482.88

Finding the Fourth Proportional to 20,436.08, 28,204.84 and 12,482.88

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Solution

The fourth proportional to 20,436.08, 28,204.84 and 12,482.88 is: 17,228.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.08 : 28,204.84 = 12,482.88 : x
  2. Step 2: Convert to fraction form
    20,436.08/28,204.84 = 12,482.88/x
  3. Step 3: Cross multiply
    20,436.08x = 28,204.84 × 12,482.88
  4. Step 4: Simplify right side
    20,436.08x = 352,077,633.14
  5. Step 5: Solve for x
    x = 352,077,633.14/20,436.08
  6. Step 6: Final answer
    x = 17,228.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.