Home / 28,942,430.85-39,940,624.31-15,890,531.09

Finding the Fourth Proportional to 28,942,430.85, 39,940,624.31 and 15,890,531.09

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Solution

The fourth proportional to 28,942,430.85, 39,940,624.31 and 15,890,531.09 is: 21,928,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942,430.85 : 39,940,624.31 = 15,890,531.09 : x
  2. Step 2: Convert to fraction form
    28,942,430.85/39,940,624.31 = 15,890,531.09/x
  3. Step 3: Cross multiply
    28,942,430.85x = 39,940,624.31 × 15,890,531.09
  4. Step 4: Simplify right side
    28,942,430.85x = 634,677,732,072,909
  5. Step 5: Solve for x
    x = 634,677,732,072,909/28,942,430.85
  6. Step 6: Final answer
    x = 21,928,971.18

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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.