Home / 21,094.92-29,112.07-12,143.71

Finding the Fourth Proportional to 21,094.92, 29,112.07 and 12,143.71

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Solution

The fourth proportional to 21,094.92, 29,112.07 and 12,143.71 is: 16,758.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.92 : 29,112.07 = 12,143.71 : x
  2. Step 2: Convert to fraction form
    21,094.92/29,112.07 = 12,143.71/x
  3. Step 3: Cross multiply
    21,094.92x = 29,112.07 × 12,143.71
  4. Step 4: Simplify right side
    21,094.92x = 353,528,535.58
  5. Step 5: Solve for x
    x = 353,528,535.58/21,094.92
  6. Step 6: Final answer
    x = 16,758.94

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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.