Home / 19,876.20-29,786.28-15,697.80

Finding the Fourth Proportional to 19,876.20, 29,786.28 and 15,697.80

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Solution

The fourth proportional to 19,876.20, 29,786.28 and 15,697.80 is: 23,524.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.20 : 29,786.28 = 15,697.80 : x
  2. Step 2: Convert to fraction form
    19,876.20/29,786.28 = 15,697.80/x
  3. Step 3: Cross multiply
    19,876.20x = 29,786.28 × 15,697.80
  4. Step 4: Simplify right side
    19,876.20x = 467,579,066.18
  5. Step 5: Solve for x
    x = 467,579,066.18/19,876.20
  6. Step 6: Final answer
    x = 23,524.57

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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.