Home / 21,406.20-32,109.35-11,550.12

Finding the Fourth Proportional to 21,406.20, 32,109.35 and 11,550.12

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Solution

The fourth proportional to 21,406.20, 32,109.35 and 11,550.12 is: 17,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.20 : 32,109.35 = 11,550.12 : x
  2. Step 2: Convert to fraction form
    21,406.20/32,109.35 = 11,550.12/x
  3. Step 3: Cross multiply
    21,406.20x = 32,109.35 × 11,550.12
  4. Step 4: Simplify right side
    21,406.20x = 370,866,787.87
  5. Step 5: Solve for x
    x = 370,866,787.87/21,406.20
  6. Step 6: Final answer
    x = 17,325.20

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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.