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Finding the Fourth Proportional to 16,419.71, 22,659.22 and 9,346.13

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Solution

The fourth proportional to 16,419.71, 22,659.22 and 9,346.13 is: 12,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,419.71 : 22,659.22 = 9,346.13 : x
  2. Step 2: Convert to fraction form
    16,419.71/22,659.22 = 9,346.13/x
  3. Step 3: Cross multiply
    16,419.71x = 22,659.22 × 9,346.13
  4. Step 4: Simplify right side
    16,419.71x = 211,775,855.79
  5. Step 5: Solve for x
    x = 211,775,855.79/16,419.71
  6. Step 6: Final answer
    x = 12,897.67

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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.