Home / 28,411.16-42,594.78-19,620.68

Finding the Fourth Proportional to 28,411.16, 42,594.78 and 19,620.68

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Solution

The fourth proportional to 28,411.16, 42,594.78 and 19,620.68 is: 29,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.16 : 42,594.78 = 19,620.68 : x
  2. Step 2: Convert to fraction form
    28,411.16/42,594.78 = 19,620.68/x
  3. Step 3: Cross multiply
    28,411.16x = 42,594.78 × 19,620.68
  4. Step 4: Simplify right side
    28,411.16x = 835,738,548.05
  5. Step 5: Solve for x
    x = 835,738,548.05/28,411.16
  6. Step 6: Final answer
    x = 29,415.85

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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.