Home / 13,381.92-18,368.16-11,856.48

Finding the Fourth Proportional to 13,381.92, 18,368.16 and 11,856.48

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Solution

The fourth proportional to 13,381.92, 18,368.16 and 11,856.48 is: 16,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.92 : 18,368.16 = 11,856.48 : x
  2. Step 2: Convert to fraction form
    13,381.92/18,368.16 = 11,856.48/x
  3. Step 3: Cross multiply
    13,381.92x = 18,368.16 × 11,856.48
  4. Step 4: Simplify right side
    13,381.92x = 217,781,721.68
  5. Step 5: Solve for x
    x = 217,781,721.68/13,381.92
  6. Step 6: Final answer
    x = 16,274.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.