Home / 21,423.62-32,136.96-6,630.63

Finding the Fourth Proportional to 21,423.62, 32,136.96 and 6,630.63

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Solution

The fourth proportional to 21,423.62, 32,136.96 and 6,630.63 is: 9,946.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.62 : 32,136.96 = 6,630.63 : x
  2. Step 2: Convert to fraction form
    21,423.62/32,136.96 = 6,630.63/x
  3. Step 3: Cross multiply
    21,423.62x = 32,136.96 × 6,630.63
  4. Step 4: Simplify right side
    21,423.62x = 213,088,257.93
  5. Step 5: Solve for x
    x = 213,088,257.93/21,423.62
  6. Step 6: Final answer
    x = 9,946.42

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Double scale
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Similar ratio
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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.