Home / 21,465.60-32,198.40-18,355.20

Finding the Fourth Proportional to 21,465.60, 32,198.40 and 18,355.20

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Solution

The fourth proportional to 21,465.60, 32,198.40 and 18,355.20 is: 27,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.60 : 32,198.40 = 18,355.20 : x
  2. Step 2: Convert to fraction form
    21,465.60/32,198.40 = 18,355.20/x
  3. Step 3: Cross multiply
    21,465.60x = 32,198.40 × 18,355.20
  4. Step 4: Simplify right side
    21,465.60x = 591,008,071.68
  5. Step 5: Solve for x
    x = 591,008,071.68/21,465.60
  6. Step 6: Final answer
    x = 27,532.80

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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.