Home / 15,416.37-21,274.62-8,342.79

Finding the Fourth Proportional to 15,416.37, 21,274.62 and 8,342.79

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Solution

The fourth proportional to 15,416.37, 21,274.62 and 8,342.79 is: 11,513.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.37 : 21,274.62 = 8,342.79 : x
  2. Step 2: Convert to fraction form
    15,416.37/21,274.62 = 8,342.79/x
  3. Step 3: Cross multiply
    15,416.37x = 21,274.62 × 8,342.79
  4. Step 4: Simplify right side
    15,416.37x = 177,489,686.99
  5. Step 5: Solve for x
    x = 177,489,686.99/15,416.37
  6. Step 6: Final answer
    x = 11,513.07

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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.