Home / 21,392.37-29,529.29-12,894.80

Finding the Fourth Proportional to 21,392.37, 29,529.29 and 12,894.80

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Solution

The fourth proportional to 21,392.37, 29,529.29 and 12,894.80 is: 17,799.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.37 : 29,529.29 = 12,894.80 : x
  2. Step 2: Convert to fraction form
    21,392.37/29,529.29 = 12,894.80/x
  3. Step 3: Cross multiply
    21,392.37x = 29,529.29 × 12,894.80
  4. Step 4: Simplify right side
    21,392.37x = 380,774,288.69
  5. Step 5: Solve for x
    x = 380,774,288.69/21,392.37
  6. Step 6: Final answer
    x = 17,799.54

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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.