Home / 15,391.68-21,226.32-11,422.68

Finding the Fourth Proportional to 15,391.68, 21,226.32 and 11,422.68

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Solution

The fourth proportional to 15,391.68, 21,226.32 and 11,422.68 is: 15,752.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.68 : 21,226.32 = 11,422.68 : x
  2. Step 2: Convert to fraction form
    15,391.68/21,226.32 = 11,422.68/x
  3. Step 3: Cross multiply
    15,391.68x = 21,226.32 × 11,422.68
  4. Step 4: Simplify right side
    15,391.68x = 242,461,460.94
  5. Step 5: Solve for x
    x = 242,461,460.94/15,391.68
  6. Step 6: Final answer
    x = 15,752.76

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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.