Home / 13,650.39-18,842.45-8,345.70

Finding the Fourth Proportional to 13,650.39, 18,842.45 and 8,345.70

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Solution

The fourth proportional to 13,650.39, 18,842.45 and 8,345.70 is: 11,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.39 : 18,842.45 = 8,345.70 : x
  2. Step 2: Convert to fraction form
    13,650.39/18,842.45 = 8,345.70/x
  3. Step 3: Cross multiply
    13,650.39x = 18,842.45 × 8,345.70
  4. Step 4: Simplify right side
    13,650.39x = 157,253,393.24
  5. Step 5: Solve for x
    x = 157,253,393.24/13,650.39
  6. Step 6: Final answer
    x = 11,520.07

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1.5x scale

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.