Home / 21,436.80-32,155.20-9,753.36

Finding the Fourth Proportional to 21,436.80, 32,155.20 and 9,753.36

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Solution

The fourth proportional to 21,436.80, 32,155.20 and 9,753.36 is: 14,630.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,436.80 : 32,155.20 = 9,753.36 : x
  2. Step 2: Convert to fraction form
    21,436.80/32,155.20 = 9,753.36/x
  3. Step 3: Cross multiply
    21,436.80x = 32,155.20 × 9,753.36
  4. Step 4: Simplify right side
    21,436.80x = 313,621,241.47
  5. Step 5: Solve for x
    x = 313,621,241.47/21,436.80
  6. Step 6: Final answer
    x = 14,630.04

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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.