Home / 21,072.10-31,607.82-6,281.08

Finding the Fourth Proportional to 21,072.10, 31,607.82 and 6,281.08

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Solution

The fourth proportional to 21,072.10, 31,607.82 and 6,281.08 is: 9,421.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.10 : 31,607.82 = 6,281.08 : x
  2. Step 2: Convert to fraction form
    21,072.10/31,607.82 = 6,281.08/x
  3. Step 3: Cross multiply
    21,072.10x = 31,607.82 × 6,281.08
  4. Step 4: Simplify right side
    21,072.10x = 198,531,246.05
  5. Step 5: Solve for x
    x = 198,531,246.05/21,072.10
  6. Step 6: Final answer
    x = 9,421.52

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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.