Home / 20,477.40-28,247.58-12,092.28

Finding the Fourth Proportional to 20,477.40, 28,247.58 and 12,092.28

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Solution

The fourth proportional to 20,477.40, 28,247.58 and 12,092.28 is: 16,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.40 : 28,247.58 = 12,092.28 : x
  2. Step 2: Convert to fraction form
    20,477.40/28,247.58 = 12,092.28/x
  3. Step 3: Cross multiply
    20,477.40x = 28,247.58 × 12,092.28
  4. Step 4: Simplify right side
    20,477.40x = 341,577,646.68
  5. Step 5: Solve for x
    x = 341,577,646.68/20,477.40
  6. Step 6: Final answer
    x = 16,680.71

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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.