Home / 16,189.29-22,319.67-12,138.88

Finding the Fourth Proportional to 16,189.29, 22,319.67 and 12,138.88

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Solution

The fourth proportional to 16,189.29, 22,319.67 and 12,138.88 is: 16,735.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,189.29 : 22,319.67 = 12,138.88 : x
  2. Step 2: Convert to fraction form
    16,189.29/22,319.67 = 12,138.88/x
  3. Step 3: Cross multiply
    16,189.29x = 22,319.67 × 12,138.88
  4. Step 4: Simplify right side
    16,189.29x = 270,935,795.77
  5. Step 5: Solve for x
    x = 270,935,795.77/16,189.29
  6. Step 6: Final answer
    x = 16,735.50

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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.