Home / 21,403.10-32,104.65-20,107.10

Finding the Fourth Proportional to 21,403.10, 32,104.65 and 20,107.10

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Solution

The fourth proportional to 21,403.10, 32,104.65 and 20,107.10 is: 30,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.10 : 32,104.65 = 20,107.10 : x
  2. Step 2: Convert to fraction form
    21,403.10/32,104.65 = 20,107.10/x
  3. Step 3: Cross multiply
    21,403.10x = 32,104.65 × 20,107.10
  4. Step 4: Simplify right side
    21,403.10x = 645,531,408.02
  5. Step 5: Solve for x
    x = 645,531,408.02/21,403.10
  6. Step 6: Final answer
    x = 30,160.65

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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.