Home / 19,926.87-27,491.90-13,215.75

Finding the Fourth Proportional to 19,926.87, 27,491.90 and 13,215.75

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Solution

The fourth proportional to 19,926.87, 27,491.90 and 13,215.75 is: 18,232.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,926.87 : 27,491.90 = 13,215.75 : x
  2. Step 2: Convert to fraction form
    19,926.87/27,491.90 = 13,215.75/x
  3. Step 3: Cross multiply
    19,926.87x = 27,491.90 × 13,215.75
  4. Step 4: Simplify right side
    19,926.87x = 363,326,011.35
  5. Step 5: Solve for x
    x = 363,326,011.35/19,926.87
  6. Step 6: Final answer
    x = 18,232.97

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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.