Home / 15,601.79-21,518.07-11,786.15

Finding the Fourth Proportional to 15,601.79, 21,518.07 and 11,786.15

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Solution

The fourth proportional to 15,601.79, 21,518.07 and 11,786.15 is: 16,255.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,601.79 : 21,518.07 = 11,786.15 : x
  2. Step 2: Convert to fraction form
    15,601.79/21,518.07 = 11,786.15/x
  3. Step 3: Cross multiply
    15,601.79x = 21,518.07 × 11,786.15
  4. Step 4: Simplify right side
    15,601.79x = 253,615,093.14
  5. Step 5: Solve for x
    x = 253,615,093.14/15,601.79
  6. Step 6: Final answer
    x = 16,255.52

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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.