Home / 20,988.06-28,962.39-12,035.94

Finding the Fourth Proportional to 20,988.06, 28,962.39 and 12,035.94

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Solution

The fourth proportional to 20,988.06, 28,962.39 and 12,035.94 is: 16,608.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.06 : 28,962.39 = 12,035.94 : x
  2. Step 2: Convert to fraction form
    20,988.06/28,962.39 = 12,035.94/x
  3. Step 3: Cross multiply
    20,988.06x = 28,962.39 × 12,035.94
  4. Step 4: Simplify right side
    20,988.06x = 348,589,588.30
  5. Step 5: Solve for x
    x = 348,589,588.30/20,988.06
  6. Step 6: Final answer
    x = 16,608.95

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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.