Home / 11,916.39-16,445.64-6,612.51

Finding the Fourth Proportional to 11,916.39, 16,445.64 and 6,612.51

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Solution

The fourth proportional to 11,916.39, 16,445.64 and 6,612.51 is: 9,125.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.39 : 16,445.64 = 6,612.51 : x
  2. Step 2: Convert to fraction form
    11,916.39/16,445.64 = 6,612.51/x
  3. Step 3: Cross multiply
    11,916.39x = 16,445.64 × 6,612.51
  4. Step 4: Simplify right side
    11,916.39x = 108,746,958.96
  5. Step 5: Solve for x
    x = 108,746,958.96/11,916.39
  6. Step 6: Final answer
    x = 9,125.83

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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.