Home / 20,093.91-30,136.54-12,688.48

Finding the Fourth Proportional to 20,093.91, 30,136.54 and 12,688.48

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Solution

The fourth proportional to 20,093.91, 30,136.54 and 12,688.48 is: 19,029.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,093.91 : 30,136.54 = 12,688.48 : x
  2. Step 2: Convert to fraction form
    20,093.91/30,136.54 = 12,688.48/x
  3. Step 3: Cross multiply
    20,093.91x = 30,136.54 × 12,688.48
  4. Step 4: Simplify right side
    20,093.91x = 382,386,885.06
  5. Step 5: Solve for x
    x = 382,386,885.06/20,093.91
  6. Step 6: Final answer
    x = 19,029.99

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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.