Home / 19,136.90-28,712.73-6,658.22

Finding the Fourth Proportional to 19,136.90, 28,712.73 and 6,658.22

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Solution

The fourth proportional to 19,136.90, 28,712.73 and 6,658.22 is: 9,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.90 : 28,712.73 = 6,658.22 : x
  2. Step 2: Convert to fraction form
    19,136.90/28,712.73 = 6,658.22/x
  3. Step 3: Cross multiply
    19,136.90x = 28,712.73 × 6,658.22
  4. Step 4: Simplify right side
    19,136.90x = 191,175,529.58
  5. Step 5: Solve for x
    x = 191,175,529.58/19,136.90
  6. Step 6: Final answer
    x = 9,989.89

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1.5x scale

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.