Home / 21,705.20-32,506.60-13,410.80

Finding the Fourth Proportional to 21,705.20, 32,506.60 and 13,410.80

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Solution

The fourth proportional to 21,705.20, 32,506.60 and 13,410.80 is: 20,084.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.20 : 32,506.60 = 13,410.80 : x
  2. Step 2: Convert to fraction form
    21,705.20/32,506.60 = 13,410.80/x
  3. Step 3: Cross multiply
    21,705.20x = 32,506.60 × 13,410.80
  4. Step 4: Simplify right side
    21,705.20x = 435,939,511.28
  5. Step 5: Solve for x
    x = 435,939,511.28/21,705.20
  6. Step 6: Final answer
    x = 20,084.57

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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.