Home / 19,428.85-29,136.12-6,945.49

Finding the Fourth Proportional to 19,428.85, 29,136.12 and 6,945.49

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Solution

The fourth proportional to 19,428.85, 29,136.12 and 6,945.49 is: 10,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.85 : 29,136.12 = 6,945.49 : x
  2. Step 2: Convert to fraction form
    19,428.85/29,136.12 = 6,945.49/x
  3. Step 3: Cross multiply
    19,428.85x = 29,136.12 × 6,945.49
  4. Step 4: Simplify right side
    19,428.85x = 202,364,630.10
  5. Step 5: Solve for x
    x = 202,364,630.10/19,428.85
  6. Step 6: Final answer
    x = 10,415.68

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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.