Home / 21,072.35-31,613.09-11,210.20

Finding the Fourth Proportional to 21,072.35, 31,613.09 and 11,210.20

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Solution

The fourth proportional to 21,072.35, 31,613.09 and 11,210.20 is: 16,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.35 : 31,613.09 = 11,210.20 : x
  2. Step 2: Convert to fraction form
    21,072.35/31,613.09 = 11,210.20/x
  3. Step 3: Cross multiply
    21,072.35x = 31,613.09 × 11,210.20
  4. Step 4: Simplify right side
    21,072.35x = 354,388,926.43
  5. Step 5: Solve for x
    x = 354,388,926.43/21,072.35
  6. Step 6: Final answer
    x = 16,817.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.