Home / 15,416.45-21,274.76-8,342.87

Finding the Fourth Proportional to 15,416.45, 21,274.76 and 8,342.87

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Solution

The fourth proportional to 15,416.45, 21,274.76 and 8,342.87 is: 11,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,416.45 : 21,274.76 = 8,342.87 : x
  2. Step 2: Convert to fraction form
    15,416.45/21,274.76 = 8,342.87/x
  3. Step 3: Cross multiply
    15,416.45x = 21,274.76 × 8,342.87
  4. Step 4: Simplify right side
    15,416.45x = 177,492,408.87
  5. Step 5: Solve for x
    x = 177,492,408.87/15,416.45
  6. Step 6: Final answer
    x = 11,513.19

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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.