Home / 21,555.60-32,320.16-8,392.64

Finding the Fourth Proportional to 21,555.60, 32,320.16 and 8,392.64

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Solution

The fourth proportional to 21,555.60, 32,320.16 and 8,392.64 is: 12,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,555.60 : 32,320.16 = 8,392.64 : x
  2. Step 2: Convert to fraction form
    21,555.60/32,320.16 = 8,392.64/x
  3. Step 3: Cross multiply
    21,555.60x = 32,320.16 × 8,392.64
  4. Step 4: Simplify right side
    21,555.60x = 271,251,467.62
  5. Step 5: Solve for x
    x = 271,251,467.62/21,555.60
  6. Step 6: Final answer
    x = 12,583.81

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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.