Home / 21,303.92-29,392.44-12,917.36

Finding the Fourth Proportional to 21,303.92, 29,392.44 and 12,917.36

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Solution

The fourth proportional to 21,303.92, 29,392.44 and 12,917.36 is: 17,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.92 : 29,392.44 = 12,917.36 : x
  2. Step 2: Convert to fraction form
    21,303.92/29,392.44 = 12,917.36/x
  3. Step 3: Cross multiply
    21,303.92x = 29,392.44 × 12,917.36
  4. Step 4: Simplify right side
    21,303.92x = 379,672,728.76
  5. Step 5: Solve for x
    x = 379,672,728.76/21,303.92
  6. Step 6: Final answer
    x = 17,821.73

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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.