Home / 21,995.46-30,353.36-12,435.20

Finding the Fourth Proportional to 21,995.46, 30,353.36 and 12,435.20

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Solution

The fourth proportional to 21,995.46, 30,353.36 and 12,435.20 is: 17,160.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.46 : 30,353.36 = 12,435.20 : x
  2. Step 2: Convert to fraction form
    21,995.46/30,353.36 = 12,435.20/x
  3. Step 3: Cross multiply
    21,995.46x = 30,353.36 × 12,435.20
  4. Step 4: Simplify right side
    21,995.46x = 377,450,102.27
  5. Step 5: Solve for x
    x = 377,450,102.27/21,995.46
  6. Step 6: Final answer
    x = 17,160.36

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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.