Home / 20,634.55-28,475.25-11,203.12

Finding the Fourth Proportional to 20,634.55, 28,475.25 and 11,203.12

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Solution

The fourth proportional to 20,634.55, 28,475.25 and 11,203.12 is: 15,460.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.55 : 28,475.25 = 11,203.12 : x
  2. Step 2: Convert to fraction form
    20,634.55/28,475.25 = 11,203.12/x
  3. Step 3: Cross multiply
    20,634.55x = 28,475.25 × 11,203.12
  4. Step 4: Simplify right side
    20,634.55x = 319,011,642.78
  5. Step 5: Solve for x
    x = 319,011,642.78/20,634.55
  6. Step 6: Final answer
    x = 15,460.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.