Home / 20,586,162.56-28,412,311.56-11,421,757.76

Finding the Fourth Proportional to 20,586,162.56, 28,412,311.56 and 11,421,757.76

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Solution

The fourth proportional to 20,586,162.56, 28,412,311.56 and 11,421,757.76 is: 15,763,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586,162.56 : 28,412,311.56 = 11,421,757.76 : x
  2. Step 2: Convert to fraction form
    20,586,162.56/28,412,311.56 = 11,421,757.76/x
  3. Step 3: Cross multiply
    20,586,162.56x = 28,412,311.56 × 11,421,757.76
  4. Step 4: Simplify right side
    20,586,162.56x = 324,518,540,039,967.69
  5. Step 5: Solve for x
    x = 324,518,540,039,967.69/20,586,162.56
  6. Step 6: Final answer
    x = 15,763,916.13

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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.