Home / 21,125.16-29,152.98-11,694.60

Finding the Fourth Proportional to 21,125.16, 29,152.98 and 11,694.60

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Solution

The fourth proportional to 21,125.16, 29,152.98 and 11,694.60 is: 16,138.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.16 : 29,152.98 = 11,694.60 : x
  2. Step 2: Convert to fraction form
    21,125.16/29,152.98 = 11,694.60/x
  3. Step 3: Cross multiply
    21,125.16x = 29,152.98 × 11,694.60
  4. Step 4: Simplify right side
    21,125.16x = 340,932,439.91
  5. Step 5: Solve for x
    x = 340,932,439.91/21,125.16
  6. Step 6: Final answer
    x = 16,138.69

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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.