Home / 15,512.51-21,409.46-8,799.80

Finding the Fourth Proportional to 15,512.51, 21,409.46 and 8,799.80

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Solution

The fourth proportional to 15,512.51, 21,409.46 and 8,799.80 is: 12,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.51 : 21,409.46 = 8,799.80 : x
  2. Step 2: Convert to fraction form
    15,512.51/21,409.46 = 8,799.80/x
  3. Step 3: Cross multiply
    15,512.51x = 21,409.46 × 8,799.80
  4. Step 4: Simplify right side
    15,512.51x = 188,398,815.06
  5. Step 5: Solve for x
    x = 188,398,815.06/15,512.51
  6. Step 6: Final answer
    x = 12,144.96

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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.