Home / 20,135.18-30,203.07-6,987.97

Finding the Fourth Proportional to 20,135.18, 30,203.07 and 6,987.97

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Solution

The fourth proportional to 20,135.18, 30,203.07 and 6,987.97 is: 10,482.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.18 : 30,203.07 = 6,987.97 : x
  2. Step 2: Convert to fraction form
    20,135.18/30,203.07 = 6,987.97/x
  3. Step 3: Cross multiply
    20,135.18x = 30,203.07 × 6,987.97
  4. Step 4: Simplify right side
    20,135.18x = 211,058,147.07
  5. Step 5: Solve for x
    x = 211,058,147.07/20,135.18
  6. Step 6: Final answer
    x = 10,482.06

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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.