Home / 21,826.12-30,119.24-13,342.45

Finding the Fourth Proportional to 21,826.12, 30,119.24 and 13,342.45

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Solution

The fourth proportional to 21,826.12, 30,119.24 and 13,342.45 is: 18,412.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,826.12 : 30,119.24 = 13,342.45 : x
  2. Step 2: Convert to fraction form
    21,826.12/30,119.24 = 13,342.45/x
  3. Step 3: Cross multiply
    21,826.12x = 30,119.24 × 13,342.45
  4. Step 4: Simplify right side
    21,826.12x = 401,864,303.14
  5. Step 5: Solve for x
    x = 401,864,303.14/21,826.12
  6. Step 6: Final answer
    x = 18,412.09

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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.