Home / 20,140.10-30,203.30-7,657.12

Finding the Fourth Proportional to 20,140.10, 30,203.30 and 7,657.12

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Solution

The fourth proportional to 20,140.10, 30,203.30 and 7,657.12 is: 11,483.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.10 : 30,203.30 = 7,657.12 : x
  2. Step 2: Convert to fraction form
    20,140.10/30,203.30 = 7,657.12/x
  3. Step 3: Cross multiply
    20,140.10x = 30,203.30 × 7,657.12
  4. Step 4: Simplify right side
    20,140.10x = 231,270,292.50
  5. Step 5: Solve for x
    x = 231,270,292.50/20,140.10
  6. Step 6: Final answer
    x = 11,483.08

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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.