Home / 21,750.50-30,015.70-12,322.10

Finding the Fourth Proportional to 21,750.50, 30,015.70 and 12,322.10

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Solution

The fourth proportional to 21,750.50, 30,015.70 and 12,322.10 is: 17,004.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.50 : 30,015.70 = 12,322.10 : x
  2. Step 2: Convert to fraction form
    21,750.50/30,015.70 = 12,322.10/x
  3. Step 3: Cross multiply
    21,750.50x = 30,015.70 × 12,322.10
  4. Step 4: Simplify right side
    21,750.50x = 369,856,456.97
  5. Step 5: Solve for x
    x = 369,856,456.97/21,750.50
  6. Step 6: Final answer
    x = 17,004.50

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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.