Home / 21,600.16-29,806.32-12,039.68

Finding the Fourth Proportional to 21,600.16, 29,806.32 and 12,039.68

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Solution

The fourth proportional to 21,600.16, 29,806.32 and 12,039.68 is: 16,613.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,600.16 : 29,806.32 = 12,039.68 : x
  2. Step 2: Convert to fraction form
    21,600.16/29,806.32 = 12,039.68/x
  3. Step 3: Cross multiply
    21,600.16x = 29,806.32 × 12,039.68
  4. Step 4: Simplify right side
    21,600.16x = 358,858,554.78
  5. Step 5: Solve for x
    x = 358,858,554.78/21,600.16
  6. Step 6: Final answer
    x = 16,613.70

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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.