Home / 28,800.30-43,200.45-21,419.18

Finding the Fourth Proportional to 28,800.30, 43,200.45 and 21,419.18

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Solution

The fourth proportional to 28,800.30, 43,200.45 and 21,419.18 is: 32,128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,800.30 : 43,200.45 = 21,419.18 : x
  2. Step 2: Convert to fraction form
    28,800.30/43,200.45 = 21,419.18/x
  3. Step 3: Cross multiply
    28,800.30x = 43,200.45 × 21,419.18
  4. Step 4: Simplify right side
    28,800.30x = 925,317,998.63
  5. Step 5: Solve for x
    x = 925,317,998.63/28,800.30
  6. Step 6: Final answer
    x = 32,128.76

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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.