Home / 20,525.82-30,763.17-9,987.18

Finding the Fourth Proportional to 20,525.82, 30,763.17 and 9,987.18

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Solution

The fourth proportional to 20,525.82, 30,763.17 and 9,987.18 is: 14,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,525.82 : 30,763.17 = 9,987.18 : x
  2. Step 2: Convert to fraction form
    20,525.82/30,763.17 = 9,987.18/x
  3. Step 3: Cross multiply
    20,525.82x = 30,763.17 × 9,987.18
  4. Step 4: Simplify right side
    20,525.82x = 307,237,316.16
  5. Step 5: Solve for x
    x = 307,237,316.16/20,525.82
  6. Step 6: Final answer
    x = 14,968.33

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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.