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Finding the Fourth Proportional to 16,818.10, 23,208.08 and 9,647.64

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Solution

The fourth proportional to 16,818.10, 23,208.08 and 9,647.64 is: 13,313.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818.10 : 23,208.08 = 9,647.64 : x
  2. Step 2: Convert to fraction form
    16,818.10/23,208.08 = 9,647.64/x
  3. Step 3: Cross multiply
    16,818.10x = 23,208.08 × 9,647.64
  4. Step 4: Simplify right side
    16,818.10x = 223,903,152.69
  5. Step 5: Solve for x
    x = 223,903,152.69/16,818.10
  6. Step 6: Final answer
    x = 13,313.23

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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.