Home / 19,662.90-29,436.42-12,987.15

Finding the Fourth Proportional to 19,662.90, 29,436.42 and 12,987.15

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Solution

The fourth proportional to 19,662.90, 29,436.42 and 12,987.15 is: 19,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,662.90 : 29,436.42 = 12,987.15 : x
  2. Step 2: Convert to fraction form
    19,662.90/29,436.42 = 12,987.15/x
  3. Step 3: Cross multiply
    19,662.90x = 29,436.42 × 12,987.15
  4. Step 4: Simplify right side
    19,662.90x = 382,295,202.00
  5. Step 5: Solve for x
    x = 382,295,202.00/19,662.90
  6. Step 6: Final answer
    x = 19,442.46

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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.