Home / 21,247.86-29,320.97-11,814.58

Finding the Fourth Proportional to 21,247.86, 29,320.97 and 11,814.58

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Solution

The fourth proportional to 21,247.86, 29,320.97 and 11,814.58 is: 16,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.86 : 29,320.97 = 11,814.58 : x
  2. Step 2: Convert to fraction form
    21,247.86/29,320.97 = 11,814.58/x
  3. Step 3: Cross multiply
    21,247.86x = 29,320.97 × 11,814.58
  4. Step 4: Simplify right side
    21,247.86x = 346,414,945.74
  5. Step 5: Solve for x
    x = 346,414,945.74/21,247.86
  6. Step 6: Final answer
    x = 16,303.52

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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.