Home / 21,962.16-30,312.36-20,190.96

Finding the Fourth Proportional to 21,962.16, 30,312.36 and 20,190.96

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Solution

The fourth proportional to 21,962.16, 30,312.36 and 20,190.96 is: 27,867.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,962.16 : 30,312.36 = 20,190.96 : x
  2. Step 2: Convert to fraction form
    21,962.16/30,312.36 = 20,190.96/x
  3. Step 3: Cross multiply
    21,962.16x = 30,312.36 × 20,190.96
  4. Step 4: Simplify right side
    21,962.16x = 612,035,648.27
  5. Step 5: Solve for x
    x = 612,035,648.27/21,962.16
  6. Step 6: Final answer
    x = 27,867.73

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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.