Home / 15,416.30-21,274.44-8,342.72

Finding the Fourth Proportional to 15,416.30, 21,274.44 and 8,342.72

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Solution

The fourth proportional to 15,416.30, 21,274.44 and 8,342.72 is: 11,512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.30 : 21,274.44 = 8,342.72 : x
  2. Step 2: Convert to fraction form
    15,416.30/21,274.44 = 8,342.72/x
  3. Step 3: Cross multiply
    15,416.30x = 21,274.44 × 8,342.72
  4. Step 4: Simplify right side
    15,416.30x = 177,486,696.08
  5. Step 5: Solve for x
    x = 177,486,696.08/15,416.30
  6. Step 6: Final answer
    x = 11,512.92

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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.