Home / 21,922.36-30,252.72-12,490.84

Finding the Fourth Proportional to 21,922.36, 30,252.72 and 12,490.84

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Solution

The fourth proportional to 21,922.36, 30,252.72 and 12,490.84 is: 17,237.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.36 : 30,252.72 = 12,490.84 : x
  2. Step 2: Convert to fraction form
    21,922.36/30,252.72 = 12,490.84/x
  3. Step 3: Cross multiply
    21,922.36x = 30,252.72 × 12,490.84
  4. Step 4: Simplify right side
    21,922.36x = 377,881,885.08
  5. Step 5: Solve for x
    x = 377,881,885.08/21,922.36
  6. Step 6: Final answer
    x = 17,237.28

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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.