Home / 20,979.94-28,952.40-12,027.64

Finding the Fourth Proportional to 20,979.94, 28,952.40 and 12,027.64

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Solution

The fourth proportional to 20,979.94, 28,952.40 and 12,027.64 is: 16,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.94 : 28,952.40 = 12,027.64 : x
  2. Step 2: Convert to fraction form
    20,979.94/28,952.40 = 12,027.64/x
  3. Step 3: Cross multiply
    20,979.94x = 28,952.40 × 12,027.64
  4. Step 4: Simplify right side
    20,979.94x = 348,229,044.34
  5. Step 5: Solve for x
    x = 348,229,044.34/20,979.94
  6. Step 6: Final answer
    x = 16,598.19

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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.