Home / 18,721,857.40-28,082,786.10-16,407,719.80

Finding the Fourth Proportional to 18,721,857.40, 28,082,786.10 and 16,407,719.80

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Solution

The fourth proportional to 18,721,857.40, 28,082,786.10 and 16,407,719.80 is: 24,611,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,857.40 : 28,082,786.10 = 16,407,719.80 : x
  2. Step 2: Convert to fraction form
    18,721,857.40/28,082,786.10 = 16,407,719.80/x
  3. Step 3: Cross multiply
    18,721,857.40x = 28,082,786.10 × 16,407,719.80
  4. Step 4: Simplify right side
    18,721,857.40x = 460,774,485,532,134.81
  5. Step 5: Solve for x
    x = 460,774,485,532,134.81/18,721,857.40
  6. Step 6: Final answer
    x = 24,611,579.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.