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Finding the Fourth Proportional to 18,822.29, 28,234.98 and 9,457.47

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Solution

The fourth proportional to 18,822.29, 28,234.98 and 9,457.47 is: 14,186.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.29 : 28,234.98 = 9,457.47 : x
  2. Step 2: Convert to fraction form
    18,822.29/28,234.98 = 9,457.47/x
  3. Step 3: Cross multiply
    18,822.29x = 28,234.98 × 9,457.47
  4. Step 4: Simplify right side
    18,822.29x = 267,031,476.30
  5. Step 5: Solve for x
    x = 267,031,476.30/18,822.29
  6. Step 6: Final answer
    x = 14,186.99

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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.