Home / 13,136.90-19,711.20-6,895.40

Finding the Fourth Proportional to 13,136.90, 19,711.20 and 6,895.40

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Solution

The fourth proportional to 13,136.90, 19,711.20 and 6,895.40 is: 10,346.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.90 : 19,711.20 = 6,895.40 : x
  2. Step 2: Convert to fraction form
    13,136.90/19,711.20 = 6,895.40/x
  3. Step 3: Cross multiply
    13,136.90x = 19,711.20 × 6,895.40
  4. Step 4: Simplify right side
    13,136.90x = 135,916,608.48
  5. Step 5: Solve for x
    x = 135,916,608.48/13,136.90
  6. Step 6: Final answer
    x = 10,346.17

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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.