Home / 20,697.32-28,563.30-12,199.72

Finding the Fourth Proportional to 20,697.32, 28,563.30 and 12,199.72

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Solution

The fourth proportional to 20,697.32, 28,563.30 and 12,199.72 is: 16,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.32 : 28,563.30 = 12,199.72 : x
  2. Step 2: Convert to fraction form
    20,697.32/28,563.30 = 12,199.72/x
  3. Step 3: Cross multiply
    20,697.32x = 28,563.30 × 12,199.72
  4. Step 4: Simplify right side
    20,697.32x = 348,464,262.28
  5. Step 5: Solve for x
    x = 348,464,262.28/20,697.32
  6. Step 6: Final answer
    x = 16,836.20

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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.