Home / 20,074.86-30,103.53-10,712.78

Finding the Fourth Proportional to 20,074.86, 30,103.53 and 10,712.78

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Solution

The fourth proportional to 20,074.86, 30,103.53 and 10,712.78 is: 16,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.86 : 30,103.53 = 10,712.78 : x
  2. Step 2: Convert to fraction form
    20,074.86/30,103.53 = 10,712.78/x
  3. Step 3: Cross multiply
    20,074.86x = 30,103.53 × 10,712.78
  4. Step 4: Simplify right side
    20,074.86x = 322,492,343.60
  5. Step 5: Solve for x
    x = 322,492,343.60/20,074.86
  6. Step 6: Final answer
    x = 16,064.49

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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.