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Finding the Fourth Proportional to 16,420.24, 22,659.08 and 9,346.64

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Solution

The fourth proportional to 16,420.24, 22,659.08 and 9,346.64 is: 12,897.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,420.24 : 22,659.08 = 9,346.64 : x
  2. Step 2: Convert to fraction form
    16,420.24/22,659.08 = 9,346.64/x
  3. Step 3: Cross multiply
    16,420.24x = 22,659.08 × 9,346.64
  4. Step 4: Simplify right side
    16,420.24x = 211,786,263.49
  5. Step 5: Solve for x
    x = 211,786,263.49/16,420.24
  6. Step 6: Final answer
    x = 12,897.88

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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.