Home / 15,419.08-21,260.58-11,391.73

Finding the Fourth Proportional to 15,419.08, 21,260.58 and 11,391.73

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Solution

The fourth proportional to 15,419.08, 21,260.58 and 11,391.73 is: 15,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.08 : 21,260.58 = 11,391.73 : x
  2. Step 2: Convert to fraction form
    15,419.08/21,260.58 = 11,391.73/x
  3. Step 3: Cross multiply
    15,419.08x = 21,260.58 × 11,391.73
  4. Step 4: Simplify right side
    15,419.08x = 242,194,680.70
  5. Step 5: Solve for x
    x = 242,194,680.70/15,419.08
  6. Step 6: Final answer
    x = 15,707.47

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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.