Home / 19,313.20-28,962.50-8,917.66

Finding the Fourth Proportional to 19,313.20, 28,962.50 and 8,917.66

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Solution

The fourth proportional to 19,313.20, 28,962.50 and 8,917.66 is: 13,373.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313.20 : 28,962.50 = 8,917.66 : x
  2. Step 2: Convert to fraction form
    19,313.20/28,962.50 = 8,917.66/x
  3. Step 3: Cross multiply
    19,313.20x = 28,962.50 × 8,917.66
  4. Step 4: Simplify right side
    19,313.20x = 258,277,727.75
  5. Step 5: Solve for x
    x = 258,277,727.75/19,313.20
  6. Step 6: Final answer
    x = 13,373.12

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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.