Home / 13,563.91-18,699.82-11,595.61

Finding the Fourth Proportional to 13,563.91, 18,699.82 and 11,595.61

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Solution

The fourth proportional to 13,563.91, 18,699.82 and 11,595.61 is: 15,986.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.91 : 18,699.82 = 11,595.61 : x
  2. Step 2: Convert to fraction form
    13,563.91/18,699.82 = 11,595.61/x
  3. Step 3: Cross multiply
    13,563.91x = 18,699.82 × 11,595.61
  4. Step 4: Simplify right side
    13,563.91x = 216,835,819.79
  5. Step 5: Solve for x
    x = 216,835,819.79/13,563.91
  6. Step 6: Final answer
    x = 15,986.23

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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.