Home / 21,382.20-32,015.70-16,774.20

Finding the Fourth Proportional to 21,382.20, 32,015.70 and 16,774.20

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Solution

The fourth proportional to 21,382.20, 32,015.70 and 16,774.20 is: 25,116.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.20 : 32,015.70 = 16,774.20 : x
  2. Step 2: Convert to fraction form
    21,382.20/32,015.70 = 16,774.20/x
  3. Step 3: Cross multiply
    21,382.20x = 32,015.70 × 16,774.20
  4. Step 4: Simplify right side
    21,382.20x = 537,037,754.94
  5. Step 5: Solve for x
    x = 537,037,754.94/21,382.20
  6. Step 6: Final answer
    x = 25,116.11

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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.