Home / 15,266.99-21,057.68-12,992.51

Finding the Fourth Proportional to 15,266.99, 21,057.68 and 12,992.51

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Solution

The fourth proportional to 15,266.99, 21,057.68 and 12,992.51 is: 17,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,266.99 : 21,057.68 = 12,992.51 : x
  2. Step 2: Convert to fraction form
    15,266.99/21,057.68 = 12,992.51/x
  3. Step 3: Cross multiply
    15,266.99x = 21,057.68 × 12,992.51
  4. Step 4: Simplify right side
    15,266.99x = 273,591,947.73
  5. Step 5: Solve for x
    x = 273,591,947.73/15,266.99
  6. Step 6: Final answer
    x = 17,920.50

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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.