Home / 14,215.05-19,618.59-11,820.90

Finding the Fourth Proportional to 14,215.05, 19,618.59 and 11,820.90

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Solution

The fourth proportional to 14,215.05, 19,618.59 and 11,820.90 is: 16,314.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.05 : 19,618.59 = 11,820.90 : x
  2. Step 2: Convert to fraction form
    14,215.05/19,618.59 = 11,820.90/x
  3. Step 3: Cross multiply
    14,215.05x = 19,618.59 × 11,820.90
  4. Step 4: Simplify right side
    14,215.05x = 231,909,390.53
  5. Step 5: Solve for x
    x = 231,909,390.53/14,215.05
  6. Step 6: Final answer
    x = 16,314.36

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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.