Home / 21,491.39-32,226.53-12,623.99

Finding the Fourth Proportional to 21,491.39, 32,226.53 and 12,623.99

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Solution

The fourth proportional to 21,491.39, 32,226.53 and 12,623.99 is: 18,929.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,491.39 : 32,226.53 = 12,623.99 : x
  2. Step 2: Convert to fraction form
    21,491.39/32,226.53 = 12,623.99/x
  3. Step 3: Cross multiply
    21,491.39x = 32,226.53 × 12,623.99
  4. Step 4: Simplify right side
    21,491.39x = 406,827,168.20
  5. Step 5: Solve for x
    x = 406,827,168.20/21,491.39
  6. Step 6: Final answer
    x = 18,929.77

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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.