Home / 13,136.76-19,707-4,369.68

Finding the Fourth Proportional to 13,136.76, 19,707 and 4,369.68

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Solution

The fourth proportional to 13,136.76, 19,707 and 4,369.68 is: 6,555.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.76 : 19,707 = 4,369.68 : x
  2. Step 2: Convert to fraction form
    13,136.76/19,707 = 4,369.68/x
  3. Step 3: Cross multiply
    13,136.76x = 19,707 × 4,369.68
  4. Step 4: Simplify right side
    13,136.76x = 86,113,283.76
  5. Step 5: Solve for x
    x = 86,113,283.76/13,136.76
  6. Step 6: Final answer
    x = 6,555.14

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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.