Home / 21,997.56-30,315.92-15,624.44

Finding the Fourth Proportional to 21,997.56, 30,315.92 and 15,624.44

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Solution

The fourth proportional to 21,997.56, 30,315.92 and 15,624.44 is: 21,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,997.56 : 30,315.92 = 15,624.44 : x
  2. Step 2: Convert to fraction form
    21,997.56/30,315.92 = 15,624.44/x
  3. Step 3: Cross multiply
    21,997.56x = 30,315.92 × 15,624.44
  4. Step 4: Simplify right side
    21,997.56x = 473,669,043.38
  5. Step 5: Solve for x
    x = 473,669,043.38/21,997.56
  6. Step 6: Final answer
    x = 21,532.80

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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.