Home / 15,555.88-21,467.10-8,482.78

Finding the Fourth Proportional to 15,555.88, 21,467.10 and 8,482.78

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Solution

The fourth proportional to 15,555.88, 21,467.10 and 8,482.78 is: 11,706.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.88 : 21,467.10 = 8,482.78 : x
  2. Step 2: Convert to fraction form
    15,555.88/21,467.10 = 8,482.78/x
  3. Step 3: Cross multiply
    15,555.88x = 21,467.10 × 8,482.78
  4. Step 4: Simplify right side
    15,555.88x = 182,100,686.54
  5. Step 5: Solve for x
    x = 182,100,686.54/15,555.88
  6. Step 6: Final answer
    x = 11,706.23

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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.