Home / 21,769.15-30,018.62-16,115.76

Finding the Fourth Proportional to 21,769.15, 30,018.62 and 16,115.76

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Solution

The fourth proportional to 21,769.15, 30,018.62 and 16,115.76 is: 22,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.15 : 30,018.62 = 16,115.76 : x
  2. Step 2: Convert to fraction form
    21,769.15/30,018.62 = 16,115.76/x
  3. Step 3: Cross multiply
    21,769.15x = 30,018.62 × 16,115.76
  4. Step 4: Simplify right side
    21,769.15x = 483,772,644.78
  5. Step 5: Solve for x
    x = 483,772,644.78/21,769.15
  6. Step 6: Final answer
    x = 22,222.85

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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.