Home / 36,111.12-54,129.78-13,915.80

Finding the Fourth Proportional to 36,111.12, 54,129.78 and 13,915.80

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Solution

The fourth proportional to 36,111.12, 54,129.78 and 13,915.80 is: 20,859.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,111.12 : 54,129.78 = 13,915.80 : x
  2. Step 2: Convert to fraction form
    36,111.12/54,129.78 = 13,915.80/x
  3. Step 3: Cross multiply
    36,111.12x = 54,129.78 × 13,915.80
  4. Step 4: Simplify right side
    36,111.12x = 753,259,192.52
  5. Step 5: Solve for x
    x = 753,259,192.52/36,111.12
  6. Step 6: Final answer
    x = 20,859.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.