Home / 11,118.99-15,341.77-6,642.06

Finding the Fourth Proportional to 11,118.99, 15,341.77 and 6,642.06

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Solution

The fourth proportional to 11,118.99, 15,341.77 and 6,642.06 is: 9,164.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,118.99 : 15,341.77 = 6,642.06 : x
  2. Step 2: Convert to fraction form
    11,118.99/15,341.77 = 6,642.06/x
  3. Step 3: Cross multiply
    11,118.99x = 15,341.77 × 6,642.06
  4. Step 4: Simplify right side
    11,118.99x = 101,900,956.85
  5. Step 5: Solve for x
    x = 101,900,956.85/11,118.99
  6. Step 6: Final answer
    x = 9,164.59

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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.