Home / 15,498.78-21,359.07-12,136.02

Finding the Fourth Proportional to 15,498.78, 21,359.07 and 12,136.02

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Solution

The fourth proportional to 15,498.78, 21,359.07 and 12,136.02 is: 16,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.78 : 21,359.07 = 12,136.02 : x
  2. Step 2: Convert to fraction form
    15,498.78/21,359.07 = 12,136.02/x
  3. Step 3: Cross multiply
    15,498.78x = 21,359.07 × 12,136.02
  4. Step 4: Simplify right side
    15,498.78x = 259,214,100.70
  5. Step 5: Solve for x
    x = 259,214,100.70/15,498.78
  6. Step 6: Final answer
    x = 16,724.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.