Home / 13,442.88-18,520.90-10,080.42

Finding the Fourth Proportional to 13,442.88, 18,520.90 and 10,080.42

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Solution

The fourth proportional to 13,442.88, 18,520.90 and 10,080.42 is: 13,888.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.88 : 18,520.90 = 10,080.42 : x
  2. Step 2: Convert to fraction form
    13,442.88/18,520.90 = 10,080.42/x
  3. Step 3: Cross multiply
    13,442.88x = 18,520.90 × 10,080.42
  4. Step 4: Simplify right side
    13,442.88x = 186,698,450.78
  5. Step 5: Solve for x
    x = 186,698,450.78/13,442.88
  6. Step 6: Final answer
    x = 13,888.28

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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.