Home / 21,869.44-30,144.90-14,783.56

Finding the Fourth Proportional to 21,869.44, 30,144.90 and 14,783.56

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Solution

The fourth proportional to 21,869.44, 30,144.90 and 14,783.56 is: 20,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.44 : 30,144.90 = 14,783.56 : x
  2. Step 2: Convert to fraction form
    21,869.44/30,144.90 = 14,783.56/x
  3. Step 3: Cross multiply
    21,869.44x = 30,144.90 × 14,783.56
  4. Step 4: Simplify right side
    21,869.44x = 445,648,937.84
  5. Step 5: Solve for x
    x = 445,648,937.84/21,869.44
  6. Step 6: Final answer
    x = 20,377.70

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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.