Home / 28,664.58-42,980.24-11,113.86

Finding the Fourth Proportional to 28,664.58, 42,980.24 and 11,113.86

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Solution

The fourth proportional to 28,664.58, 42,980.24 and 11,113.86 is: 16,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.58 : 42,980.24 = 11,113.86 : x
  2. Step 2: Convert to fraction form
    28,664.58/42,980.24 = 11,113.86/x
  3. Step 3: Cross multiply
    28,664.58x = 42,980.24 × 11,113.86
  4. Step 4: Simplify right side
    28,664.58x = 477,676,370.13
  5. Step 5: Solve for x
    x = 477,676,370.13/28,664.58
  6. Step 6: Final answer
    x = 16,664.34

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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.