Home / 20,348.60-30,486.45-18,015.80

Finding the Fourth Proportional to 20,348.60, 30,486.45 and 18,015.80

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Solution

The fourth proportional to 20,348.60, 30,486.45 and 18,015.80 is: 26,991.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.60 : 30,486.45 = 18,015.80 : x
  2. Step 2: Convert to fraction form
    20,348.60/30,486.45 = 18,015.80/x
  3. Step 3: Cross multiply
    20,348.60x = 30,486.45 × 18,015.80
  4. Step 4: Simplify right side
    20,348.60x = 549,237,785.91
  5. Step 5: Solve for x
    x = 549,237,785.91/20,348.60
  6. Step 6: Final answer
    x = 26,991.43

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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.