Home / 21,005.37-28,979.10-14,630.27

Finding the Fourth Proportional to 21,005.37, 28,979.10 and 14,630.27

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Solution

The fourth proportional to 21,005.37, 28,979.10 and 14,630.27 is: 20,183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,005.37 : 28,979.10 = 14,630.27 : x
  2. Step 2: Convert to fraction form
    21,005.37/28,979.10 = 14,630.27/x
  3. Step 3: Cross multiply
    21,005.37x = 28,979.10 × 14,630.27
  4. Step 4: Simplify right side
    21,005.37x = 423,971,912.46
  5. Step 5: Solve for x
    x = 423,971,912.46/21,005.37
  6. Step 6: Final answer
    x = 20,183.98

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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.