Home / 21,136.34-31,699.92-6,341.29

Finding the Fourth Proportional to 21,136.34, 31,699.92 and 6,341.29

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Solution

The fourth proportional to 21,136.34, 31,699.92 and 6,341.29 is: 9,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.34 : 31,699.92 = 6,341.29 : x
  2. Step 2: Convert to fraction form
    21,136.34/31,699.92 = 6,341.29/x
  3. Step 3: Cross multiply
    21,136.34x = 31,699.92 × 6,341.29
  4. Step 4: Simplify right side
    21,136.34x = 201,018,385.70
  5. Step 5: Solve for x
    x = 201,018,385.70/21,136.34
  6. Step 6: Final answer
    x = 9,510.56

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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.