Home / 21,516.75-29,694.63-12,085.32

Finding the Fourth Proportional to 21,516.75, 29,694.63 and 12,085.32

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Solution

The fourth proportional to 21,516.75, 29,694.63 and 12,085.32 is: 16,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.75 : 29,694.63 = 12,085.32 : x
  2. Step 2: Convert to fraction form
    21,516.75/29,694.63 = 12,085.32/x
  3. Step 3: Cross multiply
    21,516.75x = 29,694.63 × 12,085.32
  4. Step 4: Simplify right side
    21,516.75x = 358,869,105.83
  5. Step 5: Solve for x
    x = 358,869,105.83/21,516.75
  6. Step 6: Final answer
    x = 16,678.59

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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.