Home / 21,845.40-32,768.10-18,564.90

Finding the Fourth Proportional to 21,845.40, 32,768.10 and 18,564.90

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Solution

The fourth proportional to 21,845.40, 32,768.10 and 18,564.90 is: 27,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.40 : 32,768.10 = 18,564.90 : x
  2. Step 2: Convert to fraction form
    21,845.40/32,768.10 = 18,564.90/x
  3. Step 3: Cross multiply
    21,845.40x = 32,768.10 × 18,564.90
  4. Step 4: Simplify right side
    21,845.40x = 608,336,499.69
  5. Step 5: Solve for x
    x = 608,336,499.69/21,845.40
  6. Step 6: Final answer
    x = 27,847.35

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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.