Home / 20,674.06-28,532.32-12,178.86

Finding the Fourth Proportional to 20,674.06, 28,532.32 and 12,178.86

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Solution

The fourth proportional to 20,674.06, 28,532.32 and 12,178.86 is: 16,808.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.06 : 28,532.32 = 12,178.86 : x
  2. Step 2: Convert to fraction form
    20,674.06/28,532.32 = 12,178.86/x
  3. Step 3: Cross multiply
    20,674.06x = 28,532.32 × 12,178.86
  4. Step 4: Simplify right side
    20,674.06x = 347,491,130.76
  5. Step 5: Solve for x
    x = 347,491,130.76/20,674.06
  6. Step 6: Final answer
    x = 16,808.07

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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.