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Finding the Fourth Proportional to 16,421.71, 22,661.98 and 9,348.13

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Solution

The fourth proportional to 16,421.71, 22,661.98 and 9,348.13 is: 12,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,421.71 : 22,661.98 = 9,348.13 : x
  2. Step 2: Convert to fraction form
    16,421.71/22,661.98 = 9,348.13/x
  3. Step 3: Cross multiply
    16,421.71x = 22,661.98 × 9,348.13
  4. Step 4: Simplify right side
    16,421.71x = 211,847,021.79
  5. Step 5: Solve for x
    x = 211,847,021.79/16,421.71
  6. Step 6: Final answer
    x = 12,900.42

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.