Home / 19,221.63-26,530.11-12,146.70

Finding the Fourth Proportional to 19,221.63, 26,530.11 and 12,146.70

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Solution

The fourth proportional to 19,221.63, 26,530.11 and 12,146.70 is: 16,765.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,221.63 : 26,530.11 = 12,146.70 : x
  2. Step 2: Convert to fraction form
    19,221.63/26,530.11 = 12,146.70/x
  3. Step 3: Cross multiply
    19,221.63x = 26,530.11 × 12,146.70
  4. Step 4: Simplify right side
    19,221.63x = 322,253,287.14
  5. Step 5: Solve for x
    x = 322,253,287.14/19,221.63
  6. Step 6: Final answer
    x = 16,765.14

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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.