Home / 43,136.81-64,711.75-13,551.87

Finding the Fourth Proportional to 43,136.81, 64,711.75 and 13,551.87

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Solution

The fourth proportional to 43,136.81, 64,711.75 and 13,551.87 is: 20,329.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,136.81 : 64,711.75 = 13,551.87 : x
  2. Step 2: Convert to fraction form
    43,136.81/64,711.75 = 13,551.87/x
  3. Step 3: Cross multiply
    43,136.81x = 64,711.75 × 13,551.87
  4. Step 4: Simplify right side
    43,136.81x = 876,965,223.47
  5. Step 5: Solve for x
    x = 876,965,223.47/43,136.81
  6. Step 6: Final answer
    x = 20,329.86

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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.