Home / 20,208.60-30,291.30-9,113.40

Finding the Fourth Proportional to 20,208.60, 30,291.30 and 9,113.40

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Solution

The fourth proportional to 20,208.60, 30,291.30 and 9,113.40 is: 13,660.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.60 : 30,291.30 = 9,113.40 : x
  2. Step 2: Convert to fraction form
    20,208.60/30,291.30 = 9,113.40/x
  3. Step 3: Cross multiply
    20,208.60x = 30,291.30 × 9,113.40
  4. Step 4: Simplify right side
    20,208.60x = 276,056,733.42
  5. Step 5: Solve for x
    x = 276,056,733.42/20,208.60
  6. Step 6: Final answer
    x = 13,660.36

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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.