Home / 21,411.27-29,541.78-12,336.39

Finding the Fourth Proportional to 21,411.27, 29,541.78 and 12,336.39

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Solution

The fourth proportional to 21,411.27, 29,541.78 and 12,336.39 is: 17,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.27 : 29,541.78 = 12,336.39 : x
  2. Step 2: Convert to fraction form
    21,411.27/29,541.78 = 12,336.39/x
  3. Step 3: Cross multiply
    21,411.27x = 29,541.78 × 12,336.39
  4. Step 4: Simplify right side
    21,411.27x = 364,438,919.37
  5. Step 5: Solve for x
    x = 364,438,919.37/21,411.27
  6. Step 6: Final answer
    x = 17,020.89

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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.