Home / 21,622.07-29,838.40-12,190.56

Finding the Fourth Proportional to 21,622.07, 29,838.40 and 12,190.56

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Solution

The fourth proportional to 21,622.07, 29,838.40 and 12,190.56 is: 16,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.07 : 29,838.40 = 12,190.56 : x
  2. Step 2: Convert to fraction form
    21,622.07/29,838.40 = 12,190.56/x
  3. Step 3: Cross multiply
    21,622.07x = 29,838.40 × 12,190.56
  4. Step 4: Simplify right side
    21,622.07x = 363,746,775.03
  5. Step 5: Solve for x
    x = 363,746,775.03/21,622.07
  6. Step 6: Final answer
    x = 16,822.94

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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.