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Finding the Fourth Proportional to 11,393.84, 15,722.16 and 6,612.68

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Solution

The fourth proportional to 11,393.84, 15,722.16 and 6,612.68 is: 9,124.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.84 : 15,722.16 = 6,612.68 : x
  2. Step 2: Convert to fraction form
    11,393.84/15,722.16 = 6,612.68/x
  3. Step 3: Cross multiply
    11,393.84x = 15,722.16 × 6,612.68
  4. Step 4: Simplify right side
    11,393.84x = 103,965,612.99
  5. Step 5: Solve for x
    x = 103,965,612.99/11,393.84
  6. Step 6: Final answer
    x = 9,124.72

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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.