Home / 21,997.08-30,354.30-12,564.36

Finding the Fourth Proportional to 21,997.08, 30,354.30 and 12,564.36

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Solution

The fourth proportional to 21,997.08, 30,354.30 and 12,564.36 is: 17,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.08 : 30,354.30 = 12,564.36 : x
  2. Step 2: Convert to fraction form
    21,997.08/30,354.30 = 12,564.36/x
  3. Step 3: Cross multiply
    21,997.08x = 30,354.30 × 12,564.36
  4. Step 4: Simplify right side
    21,997.08x = 381,382,352.75
  5. Step 5: Solve for x
    x = 381,382,352.75/21,997.08
  6. Step 6: Final answer
    x = 17,337.86

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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.