Home / 28,246,942.70-38,980,624.23-15,857,032.85

Finding the Fourth Proportional to 28,246,942.70, 38,980,624.23 and 15,857,032.85

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Solution

The fourth proportional to 28,246,942.70, 38,980,624.23 and 15,857,032.85 is: 21,882,617.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246,942.70 : 38,980,624.23 = 15,857,032.85 : x
  2. Step 2: Convert to fraction form
    28,246,942.70/38,980,624.23 = 15,857,032.85/x
  3. Step 3: Cross multiply
    28,246,942.70x = 38,980,624.23 × 15,857,032.85
  4. Step 4: Simplify right side
    28,246,942.70x = 618,117,038,733,712.75
  5. Step 5: Solve for x
    x = 618,117,038,733,712.75/28,246,942.70
  6. Step 6: Final answer
    x = 21,882,617.37

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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.