Home / 21,423.12-32,136.20-6,630.13

Finding the Fourth Proportional to 21,423.12, 32,136.20 and 6,630.13

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Solution

The fourth proportional to 21,423.12, 32,136.20 and 6,630.13 is: 9,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.12 : 32,136.20 = 6,630.13 : x
  2. Step 2: Convert to fraction form
    21,423.12/32,136.20 = 6,630.13/x
  3. Step 3: Cross multiply
    21,423.12x = 32,136.20 × 6,630.13
  4. Step 4: Simplify right side
    21,423.12x = 213,067,183.71
  5. Step 5: Solve for x
    x = 213,067,183.71/21,423.12
  6. Step 6: Final answer
    x = 9,945.67

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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.