Home / 20,242.26-30,320.72-12,842.82

Finding the Fourth Proportional to 20,242.26, 30,320.72 and 12,842.82

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Solution

The fourth proportional to 20,242.26, 30,320.72 and 12,842.82 is: 19,237.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.26 : 30,320.72 = 12,842.82 : x
  2. Step 2: Convert to fraction form
    20,242.26/30,320.72 = 12,842.82/x
  3. Step 3: Cross multiply
    20,242.26x = 30,320.72 × 12,842.82
  4. Step 4: Simplify right side
    20,242.26x = 389,403,549.23
  5. Step 5: Solve for x
    x = 389,403,549.23/20,242.26
  6. Step 6: Final answer
    x = 19,237.16

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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.