Home / 21,540.08-32,310.12-12,184.58

Finding the Fourth Proportional to 21,540.08, 32,310.12 and 12,184.58

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Solution

The fourth proportional to 21,540.08, 32,310.12 and 12,184.58 is: 18,276.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.08 : 32,310.12 = 12,184.58 : x
  2. Step 2: Convert to fraction form
    21,540.08/32,310.12 = 12,184.58/x
  3. Step 3: Cross multiply
    21,540.08x = 32,310.12 × 12,184.58
  4. Step 4: Simplify right side
    21,540.08x = 393,685,368.42
  5. Step 5: Solve for x
    x = 393,685,368.42/21,540.08
  6. Step 6: Final answer
    x = 18,276.87

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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.