Home / 21,318.60-32,016.30-20,627.40

Finding the Fourth Proportional to 21,318.60, 32,016.30 and 20,627.40

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Solution

The fourth proportional to 21,318.60, 32,016.30 and 20,627.40 is: 30,978.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.60 : 32,016.30 = 20,627.40 : x
  2. Step 2: Convert to fraction form
    21,318.60/32,016.30 = 20,627.40/x
  3. Step 3: Cross multiply
    21,318.60x = 32,016.30 × 20,627.40
  4. Step 4: Simplify right side
    21,318.60x = 660,413,026.62
  5. Step 5: Solve for x
    x = 660,413,026.62/21,318.60
  6. Step 6: Final answer
    x = 30,978.25

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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.