Home / 21,814.32-30,102.94-13,330.63

Finding the Fourth Proportional to 21,814.32, 30,102.94 and 13,330.63

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Solution

The fourth proportional to 21,814.32, 30,102.94 and 13,330.63 is: 18,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.32 : 30,102.94 = 13,330.63 : x
  2. Step 2: Convert to fraction form
    21,814.32/30,102.94 = 13,330.63/x
  3. Step 3: Cross multiply
    21,814.32x = 30,102.94 × 13,330.63
  4. Step 4: Simplify right side
    21,814.32x = 401,291,046.47
  5. Step 5: Solve for x
    x = 401,291,046.47/21,814.32
  6. Step 6: Final answer
    x = 18,395.76

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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.