Home / 20,656.60-30,963.30-11,282.20

Finding the Fourth Proportional to 20,656.60, 30,963.30 and 11,282.20

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Solution

The fourth proportional to 20,656.60, 30,963.30 and 11,282.20 is: 16,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.60 : 30,963.30 = 11,282.20 : x
  2. Step 2: Convert to fraction form
    20,656.60/30,963.30 = 11,282.20/x
  3. Step 3: Cross multiply
    20,656.60x = 30,963.30 × 11,282.20
  4. Step 4: Simplify right side
    20,656.60x = 349,334,143.26
  5. Step 5: Solve for x
    x = 349,334,143.26/20,656.60
  6. Step 6: Final answer
    x = 16,911.50

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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.