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Finding the Fourth Proportional to 19,412.24, 26,788.04 and 11,871.14

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Solution

The fourth proportional to 19,412.24, 26,788.04 and 11,871.14 is: 16,381.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,412.24 : 26,788.04 = 11,871.14 : x
  2. Step 2: Convert to fraction form
    19,412.24/26,788.04 = 11,871.14/x
  3. Step 3: Cross multiply
    19,412.24x = 26,788.04 × 11,871.14
  4. Step 4: Simplify right side
    19,412.24x = 318,004,573.17
  5. Step 5: Solve for x
    x = 318,004,573.17/19,412.24
  6. Step 6: Final answer
    x = 16,381.65

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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.