Home / 20,695.28-28,561.58-12,200.01

Finding the Fourth Proportional to 20,695.28, 28,561.58 and 12,200.01

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Solution

The fourth proportional to 20,695.28, 28,561.58 and 12,200.01 is: 16,837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.28 : 28,561.58 = 12,200.01 : x
  2. Step 2: Convert to fraction form
    20,695.28/28,561.58 = 12,200.01/x
  3. Step 3: Cross multiply
    20,695.28x = 28,561.58 × 12,200.01
  4. Step 4: Simplify right side
    20,695.28x = 348,451,500.62
  5. Step 5: Solve for x
    x = 348,451,500.62/20,695.28
  6. Step 6: Final answer
    x = 16,837.25

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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.