Home / 13,111.80-18,089.82-8,398.92

Finding the Fourth Proportional to 13,111.80, 18,089.82 and 8,398.92

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Solution

The fourth proportional to 13,111.80, 18,089.82 and 8,398.92 is: 11,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.80 : 18,089.82 = 8,398.92 : x
  2. Step 2: Convert to fraction form
    13,111.80/18,089.82 = 8,398.92/x
  3. Step 3: Cross multiply
    13,111.80x = 18,089.82 × 8,398.92
  4. Step 4: Simplify right side
    13,111.80x = 151,934,950.99
  5. Step 5: Solve for x
    x = 151,934,950.99/13,111.80
  6. Step 6: Final answer
    x = 11,587.65

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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.