Home / 19,218.42-26,507.79-12,491.64

Finding the Fourth Proportional to 19,218.42, 26,507.79 and 12,491.64

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Solution

The fourth proportional to 19,218.42, 26,507.79 and 12,491.64 is: 17,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.42 : 26,507.79 = 12,491.64 : x
  2. Step 2: Convert to fraction form
    19,218.42/26,507.79 = 12,491.64/x
  3. Step 3: Cross multiply
    19,218.42x = 26,507.79 × 12,491.64
  4. Step 4: Simplify right side
    19,218.42x = 331,125,769.88
  5. Step 5: Solve for x
    x = 331,125,769.88/19,218.42
  6. Step 6: Final answer
    x = 17,229.60

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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.