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Finding the Fourth Proportional to 16,900.45, 23,323.08 and 9,347.20

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Solution

The fourth proportional to 16,900.45, 23,323.08 and 9,347.20 is: 12,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,900.45 : 23,323.08 = 9,347.20 : x
  2. Step 2: Convert to fraction form
    16,900.45/23,323.08 = 9,347.20/x
  3. Step 3: Cross multiply
    16,900.45x = 23,323.08 × 9,347.20
  4. Step 4: Simplify right side
    16,900.45x = 218,005,493.38
  5. Step 5: Solve for x
    x = 218,005,493.38/16,900.45
  6. Step 6: Final answer
    x = 12,899.39

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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.