Home / 28,909.32-43,370.88-9,187.91

Finding the Fourth Proportional to 28,909.32, 43,370.88 and 9,187.91

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Solution

The fourth proportional to 28,909.32, 43,370.88 and 9,187.91 is: 13,784.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.32 : 43,370.88 = 9,187.91 : x
  2. Step 2: Convert to fraction form
    28,909.32/43,370.88 = 9,187.91/x
  3. Step 3: Cross multiply
    28,909.32x = 43,370.88 × 9,187.91
  4. Step 4: Simplify right side
    28,909.32x = 398,487,796.27
  5. Step 5: Solve for x
    x = 398,487,796.27/28,909.32
  6. Step 6: Final answer
    x = 13,784.06

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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.