Home / 20,427.08-28,192.42-12,473.88

Finding the Fourth Proportional to 20,427.08, 28,192.42 and 12,473.88

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Solution

The fourth proportional to 20,427.08, 28,192.42 and 12,473.88 is: 17,215.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.08 : 28,192.42 = 12,473.88 : x
  2. Step 2: Convert to fraction form
    20,427.08/28,192.42 = 12,473.88/x
  3. Step 3: Cross multiply
    20,427.08x = 28,192.42 × 12,473.88
  4. Step 4: Simplify right side
    20,427.08x = 351,668,863.99
  5. Step 5: Solve for x
    x = 351,668,863.99/20,427.08
  6. Step 6: Final answer
    x = 17,215.82

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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.